February 4, 2026 - As flu cases continue to rise, doctors are seeing a troubling increase in severe and sometimes life-threatening complications — particularly in children. 

While influenza is often dismissed as a routine seasonal illness, medical experts warn it can lead to infections that affect the lungs, brain, heart and other vital organs.

Mustafa Bakir, MD, a pediatric infectious disease specialist with OSF HealthCare, says the flu’s ability to damage the body’s natural defenses is what makes it especially dangerous.

Flu vaccination rates remain alarmingly low

January 20, 2026 - Since the end of the COVID-19 pandemic, the number of people becoming sick with influenza (flu) has drastically increased each respiratory illness season.

A major part of that, according to Mustafa Bakir, MD, pediatric infectious disease specialist with OSF HealthCare, is due to extremely low vaccination rates.

How vaccines strengthen natural immunity

January 20, 2026 - When a child suddenly refuses to walk days after recovering from the flu, it can be terrifying for parents, but doctors say a little-known condition called viral myositis is often the cause.

It’s a muscle condition most often seen in children during or shortly after common viral infections, especially influenza (the flu). While the condition can be alarming for parents, medical experts say it is usually temporary and treatable with proper care.

Mustafa Bakir, MD, a pediatric infectious disease specialist with OSF HealthCare, explains the condition, and what parents should do if this happens with their kids.

How vaccines strengthen natural immunity

January 12, 2026 - For many adults, especially those who grew up in an era when measles, chickenpox or the flu were simply “childhood illnesses,” it can feel natural to believe that getting sick is how the body builds strong immunity.

While infection does contribute to the immune “library,” modern vaccines offer a safer, more reliable way to add to that protection without the risks of serious illness, hospitalization or long-term complications.

As flu activity surges across the U.S. this winter, experts emphasize that vaccines remain one of the strongest tools for maintaining health and preserving natural immunity over a lifetime. Doug Kasper, MD, an infectious disease specialist with OSF HealthCare, shares why vaccines are such a powerful tool. 

Respiratory illness update | Friday, January 9

January 9, 2026 - Respiratory illness activity continues to be high across Illinois and Michigan. Hospitalizations for influenza, respiratory syncytial virus (RSV) and COVID-19 all increased ahead of the New Year. 

Data across the Ministry: 

More than 7,000 influenza tests were administered from 12/28 - 1/3 with a 23.3% positivity rate. 

Tests slightly decreased from the week before, along with the positivity rate - which was 30% the week prior.

Respiratory syncytial virus (RSV) continues to circulate throughout the region. Nearly 2,000 RSV swabs were administered between 12/28 - 1/3, with a 3.8% positivity rate. 

Roughly 5,000 COVID-19 tests have been administered in the above-mentioned time frame, with an 11.3% positivity rate for each of the last 2 weeks. 

In an effort to protect our patients, their family members and OSF Mission Partners - OSF will continue to offer complimentary masks to all guests and Mission Partners when entering any of our facilities. 

Visitor restrictions are in place, with a limit of two visitors 18 years of age or older, per patient at any time. Exceptions may be made for those under 18, as well as those in isolation for influenza-like illness, to promote the patient's emotional well-being. Exceptions may also be made for end-of-life or other extreme circumstances. 

As each situation may be unique and challenging, we graciously ask for patients to feel empowered and have a conversation with their OSF care team to discuss their situation.

Can't stop coughing?

January 6, 2026 - Can’t stop coughing? It’s a common question happening with all of the upper respiratory illness going around including colds, flu and RSV.

Maybe two weeks ago you had a virus, you treated the symptoms with antibiotics, you’re feeling much better, but the cough is just lingering. Juanbosco Ayala, MD, is a pulmonologist in the Intensive Care Unit (ICU) at OSF Little Company of Mary Medical Center in Evergreen Park, Illinois. He provides medical care to patients on a daily basis, especially people who have breathing disorders and lung disease, and explains potential reasons why coughs linger on the OSF Newsroom.

Staying healthy this holiday season

December 22, 2025 - Each winter, flu activity tends to rise just as families begin gathering for the holidays. This year is no exception. National surveillance data shows influenza circulating in many regions of the country, with ongoing activity expected through winter.

As travel, school breaks and holiday events increase, health experts emphasize planning ahead to stay well. Doug Kasper, MD, an infectious disease specialist with OSF HealthCare, shares tips for staying healthy this holiday season.

Scrub Smarter: Bathroom hygiene tips 

December 15, 2025 - Bathrooms are filled with germ-breeding objects, and your toilet isn’t the sole culprit. 

Showers, toothbrushes, soap dispensers and any surface can be added to the germy list, according to Kaylin Heinz, an infection preventionist RN with OSF HealthCare. Heinz offers some cleaning tips for the different areas of your bathroom that can be found on the OSF Newsroom.

Flu vaccine:

December 9, 2025 - Each flu season, families look for ways to protect themselves while juggling busy schedules – and for parents of children who fear needles, vaccinations can be especially challenging. This year brings a new, convenient option: a nasal spray flu vaccine that can be delivered directly to your home. Doug Kasper, MD, an infectious disease specialist with OSF HealthCare, speaks to the improvement in access, and decrease in anxiety for kids this provides. 

Outdoor safety:

December 2, 2025 - A good way to prevent winter illnesses is by staying safe outdoors. Maddy Draper, APRN, a provider at OSF OnCall, has tips about bundling up and more.

Hand hygiene:

November 25, 2025 - Emily Isom has a resolution for kids and their parents with holiday gatherings upon us: pledge to keep your hands clean and away from your face to prevent the spread of illness.

Isom, a certified medical assistant in pediatrics at OSF HealthCare, often sees young people biting dirty fingernails and not washing their hands properly. She has a primer here.

Hand, foot and mouth disease (HFMD):

November 7, 2025 - One viral infection to pay close attention to this season is hand, foot and mouth disease (HFMD).

HFMD typically impacts young children, but adults and older children can get it, too. It causes painful red blisters in the mouth and throat, and on the hands, feet, and diaper area. HFMD is most common in children who are in child care because young children need frequent diaper changes and help using the bathroom. They also tend to put their hands in their mouths.

Find more information about symptoms and treatment options here. 

RSV hospitalizations 2024: 

November 6, 2025 - There was a steep decline in respiratory syncytial virus (RSV) hospitalizations among infants last RSV season, offering welcome relief this time around. Health officials point to the new vaccines and preventive antibodies as the driving force behind the turnaround.

Read about the stark drop in RSV hospitalizations in the full article here. 

COPD 2025:

November 4, 2025 - It’s something Michael Daley, MD, sees in the emergency department often and especially this time of year: chronic obstructive pulmonary disease, or COPD.

Dr. Daley, who provides care at OSF HealthCare, says while there’s no cure for COPD, medicine has come a long way to improve your quality of life with the disease.

Read the full story here.

Pneumonia 2025:

November 3, 2025 - Pneumonia.

It’s a hard enough word to spell, let alone remember how to prevent and treat it. With respiratory illness season here, it’s time for a reminder about how to avoid this possibly deadly condition.

Read the full story with OSF emergency department physician Fred Burke here.

Viral sore throat vs. bacterial sore throat: 

October 22, 2025 - With temperatures cooling, Awad Alyami, MD, an OSF HealthCare pediatrician, says we’re approaching the peak season for sore throats. Many cases have time-tested treatments, but some can have serious complications.

Dr. Alyami says a sore throat is an infection that causes inflammation in your throat. They’re annoying and painful, bringing symptoms like difficulty swallowing or talking and swelling of glands and tonsils. Causes can include tonsil stones, heartburn and allergies. But most commonly, causes break down into two groups: viral and bacterial.

Viral sore throat symptoms:

• Often comes with coughing or a runny nose
• May occur with cold, flu, or COVID-like symptoms
• Usually mild and can be treated at home with rest, hydration, and over-the-counter medicine

Bacterial (strep throat) symptoms:

• Sore throat with fever
• White patches on the back of the throat or tonsils
• May cause neck swelling in more serious cases
• More common in children
• Needs medical treatment to prevent complications like dehydration

Read the full story here. 

Respiratory distress in sick children:

October 7, 2025 – Respiratory distress can develop quickly in children, often from viral infections like RSV or influenza. Knowing when to seek care is vital, says Dr. Kelsey Grimes, a pediatrician with OSF HealthCare. “During work-time hours, you can call your pediatrician’s office and try to get a same-day appointment,” she says, noting that emergency care or 9-1-1 may be needed in severe cases. From using nasal saline and humidifiers at home to recognizing emergency signs, proactive steps help parents protect their children’s health. Read the full story here. 

Full guide to the 2025 flu, COVID-19 and RSV season (original article): 

September 15, 2025 – Across the board, late 2024 to early 2025 was recognized as a “rough” respiratory illness season.

“It was the season we had been predicting for five years, and we had a conjoining of three diseases," says Brian Curtis, MD, vice president chief medical officer for OSF Medical Group, part of OSF HealthCare, headquartered in Peoria, Illinois.

RSV (respiratory syncytial virus), influenza and COVID-19 were all heavily circulating communities in the winter months, all at the same time.

This puts a tremendous strain on the entire medical system for so many people to all get sick at once, Dr. Curtis adds. From a clinic setting, to an emergency department (ED) setting and everything in between, an influx of patients at the same time can impact how quickly people can be seen for other health concerns. 

Dr. Curtis says the 2024 respiratory illness season had reverted to a traditional pattern of RSV and Influenza circulating in the fall and winter months which is a "normal" respiratory illness season. Influenza started circulating in October and November and peaked in January and February (2025). RSV "reared its head" in the late winter, Dr. Curtis adds, which is generally expected. Along with COVID circulating through the same period. The confluence of these three viruses made a difficult busy respiratory season.

How does this impact the 2025-2026 season? 

"You don't know," Dr. Curtis points out.

There are a few key factors to pay attention to which will help paint the picture over time.

-          How effective the influenza vaccine is

-          How many people receive the flu vaccine

"Flu vaccines are ready. So, if you're ready, we're ready. People can start getting it now, and I'd recommend getting it by the end of October," Dr. Curtis says.

You can schedule an office visit through OSF MyChart to receive a vaccine at any OSF Medical Group – Primary Care location, or by visiting an OSF OnCall Urgent Care or OSF PromptCare walk-in clinic. You can also be seen at these locations for several health concerns like viral illnesses. OSF OnCall Urgent Care also offers the option to make a reservation ahead of time but also accepts walk-in patients.

-          How many high-risk individuals receive the RSV vaccine

There are two one-time RSV vaccines. The adult vaccine, which is a vaccine in the traditional sense, for people who are high-risk. This is supposed to help train your immune system to recognize and fight off certain viruses or bacteria, without getting severely ill.

Those who can receive the shot include pregnant women (who are 32 to 36 weeks pregnant who will deliver during the RSV season), all people 65 and older, and those 50 and older who have serious health conditions such as chronic heart disease, chronic lung disease, severe diabetes and a weakened immune system. 

The second vaccine is for very young kids, and it's a monoclonal antibody, which is a lab-made protein that works like natural antibodies and helps your body fight infections. It's called Beyfortus® (nirsevimab-alip). It's an injection for babies under 8 months of age entering their first RSV season.

If your child has serious health challenges like being on oxygen, having heart issues or lung issues, you might want to consider having your child receive nirsevimab into their second RSV season as well. But Dr. Curtis says to speak with your health care provider, as each situation can be unique. 

-          How members of the public respond when they are sick

Besides receiving your vaccines, hand washing, staying home when sick and covering your cough are three tips Dr. Curtis gives to not spread your germs to others. Last year, Dr. Curtis adds, people were returning to pre-pandemic behaviors such as returning to work in person while sick, which causes viruses to spread more rapidly. 

Flu vaccine myth

Dr. Curtis advises it’s never too late to receive your flu vaccine.

“If it's December or January and you haven't gotten it, you can still get it. It's still worthwhile and beneficial for you to do that. So don't think 'it's halfway through the season why bother now?' Flu doesn't care where it's in the season and it doesn't care who you are."

It's a myth to think that if you get your flu vaccine early, it won't protect you for the whole season. Dr. Curtis says that's just not true. 

What mild symptoms look like (and what to do)

Most mild cases of respiratory illnesses like RSV, COVID-19, influenza and rhinovirus or enterovirus (common cold) can be taken care of in the comfort of your own home.

"That could be a low-grade fever, cough, congestion and body aches." Dr. Curtis advises, "Tylenol and Motrin can be used, if your health circumstances allow for it, and then drinking fluids and having plenty of rest is the care for that."

Seeking medical care from a health care professional, in any type of setting, is not needed for people with mild symptoms. 

However, there are times when serious medical attention is required.

When it’s time to be seen by a medical provider

• Trouble breathing
• Unable to keep liquids down
• Fever not responding to Tylenol or Motrin
• People not acting like themselves mentally
• Serious illness lasting more than 7 days with no signs of improvement

What steps can you take now?

"The best thing you can do is take care of yourself and make sure your body is the healthiest it can be. That means prioritizing exercise, sleeping, eating right and limiting your intake of alcohol. Not taking care of your body can wear down your system and leave you susceptible to getting infections,” Dr. Curtis says.

OSF OnCall offers virtual options for patients to get care 24/7 through its Virtual Urgent Care. The appointment generally takes 5-10 minutes and gets sick patients a treatment plan within 30 minutes. No appointment is needed.

Video Interview Clips

Mustafa Bakir, MD, a pediatric infectious disease specialist with OSF HealthCare, says the flu’s ability to damage the body’s natural defenses is what makes it especially dangerous.

“If the virus destroys the mucosal sites, they can go wherever they aren't supposed to,” Dr. Bakir says. “Like the ears,” adding that ear infections happen in roughly 3% of patients.

How the flu leads to serious complications

Influenza disrupts the mucosal barriers that line the respiratory tract, which normally act as the body’s first line of defense. Once compromised, bacteria and viruses can spread beyond the nose and throat, triggering widespread inflammation and secondary infections.

“Influenza is one of the severe viral illnesses in small kids and all vulnerable patients who are immunocompromised or have chronic diseases,” Dr. Bakir says.

Among hospitalized flu patients, complications are common.

“Looking at the complication rates in admitted patients with influenza; up to one third of them are going to have severe pneumonia,” Dr. Bakir says. “Up to 10% of them will have some neurological symptoms and diseases. A common one is febrile seizures.”

Brain infections and neurological risks

During the 2024–2025 respiratory illness season, the U.S. Centers for Disease Control and Prevention (CDC) reported 109 cases of encephalitis in children nationwide — a serious brain infection linked to influenza. Three of those cases were treated at OSF HealthCare Children’s Hospital of Illinois in Peoria, Illinois.

Encephalitis can lead to long-term brain damage or death. Some cases are classified as pediatric influenza-associated encephalopathy or acute necrotizing encephalopathy, rare but severe complications that require immediate medical attention.

Severe pneumonia and lung damage

In addition to standard pneumonia, Dr. Bakir says necrotizing pneumonia, a rare but dangerous condition, “has also been seen.”

This form of pneumonia causes destruction of lung tissue, sometimes described as the “melting down” of the lungs. Patients typically require hospitalization and extended courses of intravenous antibiotics.

Heart, sinus and gland complications

The flu can also affect organs beyond the lungs and brain. Sinus infections are common, but more serious inflammatory conditions can occur.

“The other complication, which is serious, secondary to the influenza infection, is carditis,” Dr. Bakir says. “The heart muscle may be involved as well, not only the skeletal muscle. This severe combination may end up with heart failure and may be associated with the fluid collection around the heart and around the heart membrane, pericarditis.”

Other possible complications include parotitis, which is inflammation of the salivary glands, and carditis-related heart failure, which can be fatal.

Neuromuscular complications

Some flu-related complications affect muscle and nerve function and must be carefully distinguished by physicians.

“Guillain-Barre, an ascending paralysis disease in the body, is one of the complications of influenza,” Dr. Bakir says. “You have to differentiate this from benign acute childhood myositis.”

Circulating flu strains

Dr. Bakir notes that different influenza strains can be linked to different complications.

“Influenza B is more common with viral myositis,” he says.

Currently, Influenza A strains – including H3N2 and H1N1 – are circulating widely, though Influenza B remains present as well.

Low vaccination rates raise concern

Despite the severity of these complications, influenza vaccination rates remain critically low. In Illinois, only 24.4% of people are vaccinated against the flu.

To prevent widespread outbreaks and protect vulnerable populations, public health experts estimate that more than 50% of the population needs to be vaccinated.

Dr. Bakir has seen the consequences of limited vaccine access firsthand.

In his home country of Türkiye, Dr. Bakir has treated children who were dying from viral illnesses due to no access to vaccines.

Bottom line

Influenza is not just a seasonal inconvenience – it is a virus capable of causing serious, multi-organ complications in children and vulnerable patients. Low vaccination rates raise the risk of serious flu complications, including pneumonia, brain infections, heart inflammation and paralysis. Dr. Bakir stresses that prevention, early recognition of severe symptoms and timely medical care are essential to reducing hospitalizations and saving lives as flu activity continues to rise.

Video Interview Clips

A major part of that, according to Mustafa Bakir, MD, pediatric infectious disease specialist with OSF HealthCare, is due to extremely low vaccination rates.

In Illinois, only 24.4% of eligible people have received their flu vaccines this season. For kids ages 0-4, only 25.1% have gotten vaccinated. For children 5-17, it drops to 18.1%.

Illinois Department of Public Health’s goal? 70%. 

Some Americans tend to think the flu is just a seasonal inconvenience, but Dr. Bakir has seen the consequences of limited vaccination rates firsthand.

In his home country of Türkiye, Dr. Bakir has treated children who were dying from viral illnesses due to no access to vaccines.

"As a resident, I have seen kids die from hepatitis and hepatitis B related cirrhosis (irreversible scarring of the liver) and cancer," Dr. Bakir says. "Ten years after vaccination was implemented, we have seen none if they are vaccinated."

"I saw kids dying in front of my eyes from tetanus if they are not vaccinated," he adds. "I have seen a lot of cases of polio. Small kids paralyzed for life. It's easily preventable with vaccination." 

Severe flu complications are much more possible in those who are unvaccinated. Dr. Bakir says one third of flu patients admitted to the hospital will develop pneumonia.

The U.S. Centers for Disease Control & Prevention (CDC) reports that 32 influenza-related pediatric deaths have occurred in the 2025-2026 season. Among kids who were eligible for influenza vaccination, 90% of the deaths were in kids who were not fully vaccinated against the virus.

"Severe Influenza complications have been seen in the most vulnerable patients. Like older adults, kids 5 years and younger and those who have chronic diseases," Dr. Bakir says. "They should be protected. The greatest protection is provided by immunization.”

To learn more about what vaccines you or your child are eligible for, or to schedule your vaccination, visit osfhealthcare.org.

Video Interview Clips

It’s a muscle condition most often seen in children during or shortly after common viral infections, especially influenza (the flu). While the condition can be alarming for parents, medical experts say it is usually temporary and treatable with proper care.

Mustafa Bakir, MD, a pediatric infectious disease specialist with OSF HealthCare, says viral myositis typically appears a few days after the onset of a viral illness.

What is viral myositis?

Viral myositis refers to inflammation of the muscles caused by a viral infection. A specific and more common form in children is known as benign acute childhood myositis (BACM).

“Benign acute childhood myositis (BACM) is more likely to be seen with influenza,” Dr. Bakir says.

In these cases, the virus can trigger muscle inflammation after the initial respiratory symptoms begin to improve.

“Viral myositis, oftentimes, starts with influenza and then begins to cause damage in the person's muscles, also known as muscle inflammation.”

Common symptoms and who is affected

Viral myositis most often affects the calf muscles and can significantly impact how a child walks.

“Calves are almost exclusively affected by viral myositis, as well as gait (walking pattern).”

Children may complain of sudden leg pain, stiffness or difficulty walking, sometimes refusing to walk altogether. The condition is most seen in younger kids.

“This is likely a benign condition, but it takes about three to seven days to heal. It's mostly seen in school-aged children between 4 and 7 years of age,” Dr. Bakir says. “Usually, it presents with this pain and gait problems. Patients usually are out of school for those days.”

Treatment and recovery

In most cases, viral myositis resolves on its own within about a week. Supportive care at home is often sufficient, with a strong focus on hydration and pain control.

“Fluid support is important to prevent kidney damage. Anti-inflammatory medications like ibuprofen both decrease the pain and inflammation,” Dr. Bakir says.

Encouraging children to drink water and electrolyte-containing fluids is especially important during recovery.

When to seek emergency care

While viral myositis is usually mild, some symptoms require urgent medical evaluation. Severe pain, inability to walk or extreme muscle tenderness may signal a more serious condition.

“We must differentiate severe myositis from benign acute childhood myositis. If the patient has very severe pain and can't walk, they must be seen in the emergency department,” Dr. Bakir says. “The physician will decide if this is serious, and if the patient needs to be admitted.”

In rare cases, viral infections can lead to rhabdomyolysis, a severe breakdown of muscle tissue that can affect the kidneys.

“Those patients who refuse to walk and have very tender muscles with severe pain should be seen in the ED,” Dr. Bakir says. “Because we must differentiate those acute conditions from the more severe muscle involvement. This is rarely seen with influenza and other viral infections. We call it rhabdomyolysis.”

Dr. Bakir notes that kidney failure can occur in extreme cases and must be treated in the hospital.

“Because of the breakdown of muscle cells, the kidney canals may become blocked,” Dr. Bakir says.

Rising flu cases and prevention concerns

Dr. Bakir also points to a noticeable increase in influenza cases among children since the COVID-19 pandemic ended.

“Children under five years of age are more likely to have influenza compared to the other ages,” Dr. Bakir says. “There is a significant increase in childhood influenza since the end of the COVID-19 era.”

Low vaccination rates remain a major concern.

“Why can't we decrease the flu numbers? Because, especially in Illinois, the reported coverage of the influenza vaccine is only 24.4%. This is not optimal and sufficient to predict epidemics and complications in this community,” Dr. Bakir says.

Bottom line

Dr. Bakir emphasizes the importance of recognizing warning signs – such as severe pain or refusal to walk – that may signal the need for emergency care. As flu activity continues to rise, prevention efforts, including vaccination and early medical evaluation, remain key to reducing complications in children.

Video Interview Clips

While infection does contribute to the immune “library,” modern vaccines offer a safer, more reliable way to add to that protection without the risks of serious illness, hospitalization or long-term complications.

As flu activity increases across the U.S. this winter, experts emphasize that vaccines remain one of the strongest tools for maintaining health and preserving natural immunity over a lifetime.

Vaccine decisions start with informed conversations

“Vaccination is an individual decision, but the impact of the vaccine protects both the individual and their family cohort, work cohort. If they're in school, it can protect that community,” says Doug Kasper, MD, infectious disease specialist with OSF HealthCare. “We want people to be as educated as possible and make the best decision for themself. That's really going to come down to a discussion with them and their medical provider.”

For older generations who remember “just getting the measles,” today’s medical guidance recognizes that while infection can create immunity, it also carries significant risks – and vaccines provide a much safer pathway to the same immune protection.

How flu vaccines strengthen natural immunity

“Flu vaccines, historically, never match up perfectly to all the influenza strains that circulate in the community. What we do know is that immunity is cumulative; it's a library across a person's life and it has all of their prior infections and vaccines. It builds up over time,” Dr. Kasper says.

He explains that vaccines support and expand your natural immune memory.

“Receiving a seasonal flu vaccine, while the protection it may provide in any year may be different; over time there are benefits to doing this activity, so that you have a robust variety of immunity. As the seasonal infections change, you may be protected from something that happened in the past.”

This means vaccines don't replace natural immunity – they contribute to it, adding layers of defense that reduce the severity of illness and strengthen long-term protection.

Why vaccines remain a powerful community tool

Vaccines benefit individuals, but they also help stabilize the entire health system.

“When we talk about vaccination, we talk about it at a population level. We would like every individual to not get sick, but we also know that with hospitals, urgent cares and emergency departments, that we are trying to keep the system functional,” Dr. Kasper says. “We do that by getting as few people sick as possible, and vaccines are a very useful tool to help the individual help their community and help the medical system.”

A season of multiple circulating viruses

As families enter the stretch leading up to Christmas, flu activity is increasing on both coasts – often a preview of what will soon reach the Midwest.

COVID-19 continues to circulate year-round, RSV season is underway and Central Illinois is just beginning to see early influenza activity. Early surveillance suggests this year’s flu vaccine may not be a perfect match, but even imperfect vaccines help reduce severity, hospitalizations and complications. They also continue contributing to the “immune library” that protects people long-term.

Video Interview Clips

As travel, school breaks and holiday events increase, health experts emphasize planning ahead to stay well.

Navigating flu season during the holidays

“We're in a unique part of the year. We had Thanksgiving and we're going into the Christmas and New Year holiday. We have schools on breaks and people traveling,” says Doug Kasper, MD, infectious disease specialist with OSF HealthCare. “We notice nationwide that when there's viral activity on the coasts, it will eventually find its way into every part of the area, which includes Central Illinois.”

Health organizations such as the U.S. Centers for Disease Control & Prevention (CDC), the American Academy of Pediatrics (AAP) and the Illinois Department of Public Health (IDPH) are also urging families to stay alert to flu symptoms and take steps to protect themselves.

Flu vaccine helps preserve normal routines

For many families, staying healthy during the holidays means protecting not only themselves but also older adults, infants and immunocompromised relatives.

“People will start to travel and be around older and younger family members as families congregate. We want people to protect themselves but also be able to enjoy those activities without getting sick,” Dr. Kasper says. “It's also a time where kids are bringing home infections from school. So, we want our kids to be in school and participate in activities. Anything we can offer them to help keep them in their normal routine is beneficial, which includes flu vaccines for our children.”

Flu vaccination remains the best way to reduce severe illness and disruption, which is especially important for school-aged children whose attendance affects the whole household.

When you're sick, staying at home matters

While vaccination reduces risk, the flu can still spread quickly – especially in places where people gather. That’s why knowing when to stay home remains essential.

“If you are sick, you need to stay home. Especially in our school populations, it's hard when a child is sick. Maybe they're borderline and you don't know how sick they are, it's hard to remain home,” Dr. Kasper says. “We see a lot of infections that start at the level where we congregate. Whether that's at school or a medical facility, it will find its way into our homes. So, the way to try and address that is that if you're sick, particularly if you have a fever, is to stay home. At least be without a fever for 24 hours before resuming normal activity.”

Public health agencies echo this guidance, advising families to keep children home from school when they have a fever, vomiting, severe cough or other flu-like symptoms.

Flu symptoms can come on suddenly and vary from person to person. Common flu symptoms include:

• Fever
• Muscle or body aches
• Extreme exhaustion or fatigue
• Headache
• Cough
• Runny or stuffy nose
• Sneezing
• Sometimes a sore throat
• Vomiting or diarrhea

Fever and body aches often last for three to seven days. Cough and fatigue may last for two weeks or more.

Video Interview Clips

According to the manufacturer, “FLUMIST is a vaccine that is sprayed into the nose to help protect against influenza in people ages 2 through 49 years.”

FluMist is now available for home delivery

The ability to order FluMist online marks a major milestone in flu prevention accessibility.

“What's unique about this year is that there is a nasal mist influenza vaccine that parents can choose to receive at home. They can go through the manufacturer's website for FluMist, put in their information and it will arrive to their house,” says Doug Kasper, MD, infectious disease specialist with OSF HealthCare. “They can then self-administer nasal spray to their children. This really cuts down on the need to make an appointment in a clinic or relieves anxiety for children who are scared of needles.”

Dr. Kasper adds that this option is particularly helpful for families who previously relied on limited in-store availability.

“My kids don't like to get shots, so I would get them the nasal mist, but there were only a few carriers in Central Illinois. Sam's Club has it, so I would take them to the Sam's Club pharmacy to get it,” he says. “But the big change was that recently they started to make it available by mail order.”

Through the manufacturer’s website, families can enter insurance information, and in many cases the vaccine may be low cost or no cost at all. The process typically takes five minutes or less, and the product arrives on ice, ready for home administration.

How nasal spray vaccines can be a helpful option

Dr. Kasper notes that the mail-order nasal spray represents a shift in how families can approach routine vaccination.

“That's a much different prerogative for how we've approached vaccines in the past. Offering this, instead of having to make an appointment where the parent takes time off work, the child gets anxiety and doesn't want to go,” he says.

CDC data shows that vaccination access can significantly affect overall flu prevention strategies and community protection.

Helping kids stay healthy – and in school

For school-aged children, vaccination can directly influence attendance and participation in activities.

“I would use the flu nasal mist as a success for what can be offered. This can be very effective within a community to increase flu vaccine rates,” Dr. Kasper says. “For school-aged kids, flu vaccination rates are currently at 50% or less. This correlates with the child's attendance in school and participation in extracurricular activities. We want those things to be as high as possible, and the strategy to help that is to receive appropriate vaccine.”

Future of nasal vaccine technology

Nasal spray vaccine technology could expand beyond influenza. In the coming years, researchers expect to see further development of similar delivery systems – including potential nasal options for COVID-19.

More details on the 2025-2026 flu season can be found through the U.S. U.S. Centers for Disease Control & Prevention (CDC) flu website.

A full library of respiratory illness articles can be found on the OSF Newsroom.

Video Interview Clips

“It’s important for parents and caregivers to know the signs of labored breathing, also known as respiratory distress,” says Kelsey Grimes, DO, outpatient pediatrician at OSF HealthCare. “This understanding can help them know when it's time for their children to receive immediate medical attention.”

When to seek help

OSF HealthCare has multiple options to use if your child is in respiratory distress.

“During work-time hours, you can call your outpatient pediatrician's office, or primary care provider's office, and try to get a same-day appointment,” Dr. Grimes says. “In that, OSF also has a pediatric nurse triage line where a nurse can provide guidance or recommendations based on the symptoms you tell them. In the evenings, we have the pediatric after hours clinic (2806 Knoxville Ave. Peoria, Illinois), which is a good option.”

Additionally, OSF has multiple OSF OnCall Urgent Care and OSF PromptCare locations. But oftentimes if you're concerned about breathing for your child, the OSF HealthCare Children's Hospital of Illinois pediatric emergency department or calling 9-1-1 is the right first step.”

Why labored breathing happens

“If your child has labored breathing, oftentimes in the pediatric population, the most common cause is a viral infection. With viral infections you get a lot of inflammation, mucus, snot, phlegm – all of that,” Dr. Grimes says. “Kids' airways are smaller. So, inflammation, even on the mild side, makes those airways even smaller. Then when they're plugged up with mucus, or phlegm, they are going to really struggle to breathe.”

Children with significant breathing difficulty may need oxygen support to help them recover. This can be done using high-flow oxygen therapy (HFOT), which delivers air and oxygen down into their respiratory tract. In these cases, hospitalization is required.

At home, nasal saline and suction may be recommended, as well as controlling fevers with Tylenol or Motrin.

Rhinovirus, RSV (respiratory syncytial virus) and influenza, among other virus strains, are common culprits that can cause labored breathing. When treated properly, symptoms should begin to improve after three to four days. However, if symptoms worsen, it could indicate an underlying bacterial infection. This may require antibiotics or even hospitalization, depending on the child’s age and severity of illness.

Protecting kids from germs

“Regular hand hygiene and making sure when we touch surfaces (doorknobs, countertops, etc.) that we're not rubbing our eyes or mouth after,” Dr. Grimes says. “Don't share drinks or bites of food. Do anything you can do to try and prevent germ exposure. It’s hard, because a lot of these kids are in day care, preschool and kindergarten. So, there are no boundaries, and the kids are up close and personal there. You try your best for good hygiene, but in the end, they are probably going to be exposed.”

Signs of respiratory distress

Dr. Grimes says the most important thing to watch out for is how fast your child is breathing. Respiratory distress can cause a child to breathe much faster, or sometimes slower, than normal.

Retraction breathing, or the visible “sucking in” of the skin between or below the ribs, is another red flag.

“This happens because the muscle underlying the skin is really contracting, working hard to get that air in and back out,” Dr. Grimes explains.

Retraction breathing can happen under the rib cage (subcostal), between the ribs (intercostal), above the collarbones (supraclavicular) or at the base of the neck (tracheal tugging). Flaring nostrils are also a warning sign.

Other concerning symptoms include:

• Drooling in children who are past the teething stage
• Blue discoloration around the mouth
• Head bobbing with each breath (an emergency sign)
• Sitting forward and extending the neck in a “sniffing position” to ease breathing
• Wheezing when breathing out
• Grunting when exhaling
• Lethargic behavior (confused, drowsy)

Care and comfort at home

For viral infections, medical teams focus on supportive care, especially fever control.

For babies 2 months old or younger, any high or low temperature warrants an emergency department visit. Do not give Tylenol at this age.

Once babies are over 2 months old, Tylenol may be given in the appropriate dose based on weight, always under guidance from your pediatrician. Once over 6 months of age, babies can receive Motrin, as their kidneys are more developed. Both medications can be given every six hours as needed.

“When kids are having fevers, signs of labored breathing increase as well,” Dr. Grimes notes.

Hydration is also extremely important. “Really make sure to push fluids when your kids are sick. Hydration is key in recovery.”

Parents can help clear their child’s airway by using nasal saline followed by gentle suction. Humidifiers can help loosen mucus, and standing in a steamy bathroom with the shower running hot can offer short-term relief.

The bottom line

Labored breathing can be a sign of serious illness, and early action is the best protection. Parents and caregivers who recognize the warning signs and know when to call their pediatrician or seek emergency care, can help ensure their child receives timely, life-saving support.

Making sure your child receives the recommended childhood vaccines is another way to ensure your child is protected against respiratory illness.

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Flu remains the dominant virus

“We're seeing a lot of patients be positive with the flu. It makes you feel really bad with headache, body aches, chills, cough and fevers to name a few,” says Sarah Overton, chief nursing officer of OSF Medical Group, Home Care and Employee Health. “But we're also seeing some COVID-19 and RSV. RSV attacks very young children and older adults."

All the viruses spiking at the same time have been "somewhat crippling" for healthcare providers, Overton says OSF HealthCare hospitals are seeing high inpatients counts, with many people coming in sick with respiratory illnesses through the emergency department.

Across Illinois, nearly 20% of emergency department visits were for acute respiratory illness, according to the Illinois Department of Public Health (IDPH). 7.8% of those visits are attributed to patients with the flu.

"From Chicago and Rockford down to Alton, we're seeing a large number of respiratory illnesses. And I think the country is seeing it overall," Overton says. "The SIREN notifications from the IDPH show that other health systems in Illinois, not just OSF, are seeing this."

Illinois’ respiratory activity level, calculated by the Centers for Disease Control and Prevention (CDC) moved up to High in late December, dipped to Moderate in January, and has now returned to High to start February.

“These viruses can kill”

The IDPH has reported five flu deaths this respiratory illness season. Along with three people dying from RSV, and one person dying from RSV and COVID-19.

"There's a little bit of complacency or feeling like the COVID-19 pandemic is done. But these viruses can kill, and they can lead to major medical complications and hospital admissions. I've talked to some of my colleagues who are the nursing leaders in the hospitals, and patients coming in are indeed sick. If you can manage at home, we recommend you do so," Overton says. 

For those who are immunocompromised or chronically ill, Overton says you should consult with a medical professional in person if you are sick, but if you’re a fairly healthy individual who is mildly ill, consider staying home and rest. OSF Medical Group and OSF OnCall offer Urgent Care services for many outpatient appointments, including visits with primary care providers and specialists.

For those caring for themselves at home, there are several over-the-counter medications to help alleviate symptoms. Additionally, a health care provider may prescribe antiviral medication.

“Antiviral medication is most effective is initiated less than 48 hours after your symptoms begin,” says IDPH Director Dr. Sameer Vohra.

Flu vaccine rates down

"We've got ample flu vaccine. We are behind our influenza vaccine rates of where we've been in years past," Overton says. "It's not too late to get your flu shot, it's not too late to get your pneumonia shot. If you get it at a retail pharmacy, that's great. You can also get it at OSF or another healthcare provider. We just want you to get vaccinated.”

Flu vaccines are offered at OSF primary care and many medical specialty offices, along with commercial pharmacies. The CDC’s Flu Vaccine Finder allows you to type in your zip code and find options closest to you. Overton also recommends speaking with your healthcare provider about the recently-approved RSV vaccine available for some.

Respiratory illnesses impacting care teams

"Unfortunately, we have had some experiences with respiratory illnesses in our staff," Overton says. "We need to do everything we can to protect them. OSF Mission Partners (employees) have started masking in those areas we know exposure is likely." Respiratory cough stations with hand sanitizer, tissues and masks are available at all OSF facilities.

How health systems being overloaded impacts patients

"When we overwhelm the health system, it could lead to delays in other critical illnesses that need to come to the emergency room or urgent care to receive adequate management," Overton says.

To protect yourself and others, Overton recommends regularly washing and sanitizing your hands. Also make sure to cover your cough to decrease the spread of respiratory droplets, which is a major way the flu and other respiratory illnesses spread.

When to head to the emergency department

“Those hallmark signs of when to see care is when a fever isn't responding to medications after 24-48 hours. Or when you’re extremely uncomfortable and experiencing respiratory impacts like shortness of breath that you are struggling to breathe,” Overton says.

Warning signs look different for kids and adults. The CDC breaks down symptoms to keep a close eye on:

In children

• Fast breathing or trouble breathing
• Bluish lips or face
• Ribs pulling in with each breath
• Chest pain
• Severe muscle pain (child refuses to walk)
• Dehydration (no urine for 8 hours, dry mouth, no tears when crying)
• Not alert or interacting when awake
• Seizures
• Fever above 104 degrees Fahrenheit that is not controlled by fever-reducing medicine
• In children younger than 12 weeks, any fever
• Fever or cough that improve but then return or worsen
• Worsening of chronic medical conditions

In adults

• Difficulty breathing or shortness of breath
• Persistent pain or pressure in the chest or abdomen
• Persistent dizziness, confusion, inability to arouse
• Seizures
• Not urinating
• Severe muscle pain
• Severe weakness or unsteadiness
• Fever or cough that improve but then return or worsen

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Influenza, or the flu, is dominating the other viruses like COVID-19, respiratory syncytial virus (RSV), norovirus, Human metapneumovirus (HMPV) and others, according to Doug Kasper, MD, an infectious disease specialist with OSF HealthCare. He adds that the increase in flu cases is “typical and expected” for this time of year. The strain of flu that is circulating is an Influenza A strain, which is also predicted.

Flu at highest rate and climbing

"Seasonal influenza rates are increasing each week, per the CDC. That refers to the number of positive tests that are being seen at access sites, like (OSF) PromptCare, urgent care, emergency departments and primary care offices," Dr. Kasper says. "The percentage of tests returning positive for influenza is climbing and it's at its highest level for our season."

This comes just days after the Chicago Department of Public Health (CDPH) reported two flu deaths in children, both under the age of two.

“Even one pediatric flu death is a tremendous loss. We express sincere condolences to the families of these children,” said Dr. Olusimbo Ige, CDPH Commissioner. “Respiratory virus season is in full swing, and vaccination remains the best way to protect against severe illness, including in children.”

Why the flu vaccine is beneficial

"While the influenza vaccine is not perfect, as far as protecting against infection, cumulative influenza vaccine is associated with less severe illness,” Dr. Kasper says. This means your body builds up a library of vaccine, and over time, if you're exposed to a strain, even if it's changed, potentially had you been vaccinated or exposed to that strain in the past is beneficial for the future."

Seasonal flu shots are available and recommended for anyone 6 months and older, according to the Centers for Disease Control and Prevention (CDC). Free vaccines can be accessed at local pharmacies, or with you or your child’s primary care provider.

Is the flu up because COVID-19 is down?

"The precautions we followed for COVID-19, like masking, isolation and staying home when sick, have largely been changed in this era," Dr. Kasper says. "So, we have people that are more accustomed to coming into work when they've felt sick yesterday, whereas in the past they wouldn't do that."

In the CDC’s FluView database, the organization reports that over 37,000 people across the United States were admitted to hospitals with flu in the first week of January. Five pediatric influenza deaths were reported, now totaling 16 children who have died from the virus this flu season.

Flu vaccines are still important late in flu season

"For people that have been vaccinated, that's wonderful. For people that have not been vaccinated, there is still time and benefit to receive vaccines while we're in the middle of flu season," Dr. Kasper says. "There are therapeutics like antiviral medications that can be prescribed for people that are at risk with influenza."

Dr. Kasper says if anyone has flu-like symptoms (fever, cough, chills, body aches, headache) for more than 2 days, they should contact their medical provider immediately. They can discuss whether they should be tested for the flu and how to proceed with treating symptoms.

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In a health advisory sent to long-term care (LTC) facilities, farm bureaus and local health departments, the IDPH reports large commercial poultry flocks in central and southern Illinois have recently tested positive for the H5N1 virus. Farm owners are now in the process of “de-populating” the birds.

Several counties in northern Illinois have reported events where many ducks and geese have died, referred to as “die-offs.” The reason LTCs received the notice is because many are located on retention ponds that attract waterfowl and wild birds.

No human cases have been reported in Illinois yet. But health officials continue to warn those who interact with potentially infected animals that if they don’t wear the proper personal protective equipment (PPE), they are at higher risk of developing the novel influenza A virus due to H5N1.

Doug Kasper, MD, an infectious disease specialist with OSF HealthCare, says bird flu has really hurt local American farms.

"Avian flu is a different strain of Influenza A. It's a strain that has been circulating in bird and cattle populations for over two years. It has been devastating to those populations, like poultry and dairy farms across the country," Dr. Kasper says. "What was unique was that in the calendar year 2024, was the first confirmed testing where the spread from an animal to a human occurred of this specific strain of influenza."

In early January, the Louisiana Department of Health reported the first-ever human bird flu death in the United States. The patient was reported to be over 65 years of age and had underlying medical conditions. The patient contracted H5N1 after exposure to sick and dead birds in a backyard flock.

Currently bird flu is only transmitted from animal to animal or animal to person. There have been no reported cases to have transmitted from human to human, but Dr. Kasper says there is always a concern about that possibility.

"Whenever there is an animal strain of infection that's not typically found in humans, we worry about the impact of if it were to cross over," Dr. Kasper says. "We've seen this with other infections throughout history. Even within COVID-19, there was the initial thought that it was an animal strain of infection."

The current flu vaccine does not protect against avian influenza, Dr. Kasper says.

"Each year the influenza vaccine, which is made up of three or four strains of influenza virus, is reexamined and matched up to a variety of factors to try and predict which strains will be most prevalent the next year," Dr. Kasper says. "Right now, avian flu cases in humans are so low that it doesn't warrant a different strain that would be much more likely to be found." 

IDPH’s guidance to LTCs is to have residents tested for the flu if they are suspected of having acute respiratory illness. Don’t touch dead or sick birds, only trained staff in appropriate PPE should handle with caution.

"The average person who does not interact with poultry or dairy farms is at very low risk of avian flu," Dr. Kasper says. 

There is concern that bird flu could enter the food production and distribution across America. This is why the United States Department of Agriculture (USDA) is closely monitoring dairy and poultry farms, to try and limit any possible contamination of dairy, meat or poultry products. 

The bird flu continues to be rarely seen in humans, as only 67 cases (as of January 15) have been reported by the Centers for Disease Control and Prevention. Most cases have been mild, Dr. Kasper says.

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