Fall respiratory vaccines 2026-27: a plain guide for Illinois families
As of November 5, 2026, Illinois recommends a flu shot for everyone 6 months and older, a COVID-19 vaccine for all adults, and RSV protection for babies, pregnant people and adults 75 and older. With flu rising early this year, getting protected now still helps.
Health news · reviewed by the clinical team at Urgent Care Center of WestmontUpdated November 5, 2026
IDPH released its 2026-27 fall vaccine guidance on September 10, 2026, based on advice from the Illinois Immunization Advisory Committee.
Flu vaccine is recommended for everyone 6 months and older, every season.
IDPH recommends a COVID-19 vaccine for all adults 19 and older, and the 2026-27 formula targets the XFG strain.
The adult RSV vaccine is a one-time dose for adults 75 and older and adults 50 to 74 at increased risk.
An Illinois law requires state-regulated insurers to cover immunizations that IDPH recommends.
Why fall vaccines matter right now
Flu season has started earlier than usual. The CDC FluView report for the week ending October 24, 2026 says early-season flu activity is higher than typically seen at this time of year. COVID-19 activity is declining nationally and RSV is low, but CDC expects all three to cause about as many peak hospitalizations this winter as last season.
Vaccines take time to work. Flu vaccine protection builds over about two weeks, so getting a shot in November still gives you protection before the winter peak.
IDPH respiratory vaccine recommendations for 2026-27
Vaccine
Who IDPH recommends it for
Flu
All people 6 months and older
COVID-19
All adults 19 and older; all children 6 to 23 months; children 2 to 18 in certain risk groups or if desired; people who are pregnant, planning pregnancy, postpartum or breastfeeding
RSV, pregnancy
Pregnant people at weeks 32 through 36 who were not vaccinated before, from September through March 1
RSV, babies
All babies under 8 months without protection from a pregnancy vaccine, entering their first RSV season; some higher-risk children 8 to 19 months
RSV, adults
All adults 75 and older, and adults 50 to 74 at increased risk, if not vaccinated before
IDPH says it issued its own guidance in response to federal immunization actions that it describes as not based on scientific evidence. Federal and state advice can differ, so ask your clinician or pharmacist what applies to you.
Three strains: All U.S. flu vaccines this season protect against two influenza A viruses and one influenza B virus.
Age 65 and older: CDC prefers a high-dose, adjuvanted or recombinant flu vaccine. If none is available, any age-appropriate flu vaccine is fine.
Children: Some children need two doses, given at least four weeks apart.
Timing: CDC suggests finishing by the end of October, but later vaccination still helps while flu is spreading.
Early CDC lab checks found that 94.2% of the H1N1 viruses tested so far this season were well recognized by antibodies made against this season's vaccine strain.
COVID-19 vaccine: the 2026-27 formula
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The FDA advised that 2026-27 COVID-19 vaccines target the XFG strain from the JN.1 family, to more closely match the viruses now circulating.
IDPH recommends the vaccine for all Illinois adults 19 and older.
IDPH's director signed a standing order so the vaccine can be offered at more locations.
Product labels and federal rules can limit which vaccine a given person can get, so your pharmacist may ask about your age and health conditions.
RSV protection: one-time for adults, timed for babies
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The CDC adult RSV page says the RSV vaccine is a single dose, not a yearly shot, and protection lasts more than one year. If you already had one, you do not need another now.
For babies, families choose either a pregnancy vaccine at weeks 32 to 36 or an infant antibody shot after birth. Most babies need only one of the two. Your OB or pediatrician can help you decide.
Cost and insurance coverage in Illinois
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IDPH notes that Public Act 104-0439, signed in December 2025, requires state-regulated insurers to cover immunizations that IDPH recommends. The law also expands children's access to vaccines at pharmacies.
The law applies to state-regulated insurers, so some plans may follow different rules. Call the number on your insurance card to check.
Uninsured or underinsured residents can use IDPH's Vaccine Locator Dashboard or contact their local health department to find no-cost vaccines.
Urgent Care Center of Westmont, also known as Immediate Care Center of Westmont, offers immunizations, including flu shots, at our Westmont, IL clinics, open 7 days a week. Our team is led by board-certified physicians.
Call aheadVaccine supply changes during the season. Call (630) 324-6825 to confirm the vaccine you want is in stock.
Bring your recordsBring a vaccine record if you have one, plus your insurance card and a list of allergies.
Review and consentA clinician checks your age, health history and past vaccine reactions and answers your questions.
Get your shotYou receive written information about the vaccine and stay a short time afterward so staff can watch for a reaction.
Feeling sick already? Testing comes first. We can test for flu, COVID-19, RSV and strep. You can book online for the Cass Ave clinic.
No. CDC recommends a flu vaccine for everyone 6 months and older every season, and flu is still early in its rise this year. Protection takes about two weeks to build, so a November shot still helps before the winter peak. Call ahead to confirm your clinic has flu vaccine in stock.
Do I need an RSV vaccine every year?
No. CDC says the adult RSV vaccine is a single dose and is not a yearly vaccine at this time. If you already got one, you do not need another. It is recommended for all adults 75 and older and for adults 50 to 74 who are at increased risk of severe RSV.
Will insurance cover my fall vaccines in Illinois?
Usually, yes, for state-regulated plans. Public Act 104-0439 requires state-regulated insurers to cover immunizations recommended by IDPH. Not every plan is state-regulated, so call your insurer to confirm before your visit. Uninsured or underinsured residents can find no-cost vaccines through IDPH's Vaccine Locator Dashboard or their local health department.
Can I get a vaccine if I have a cold?
Usually, yes. CDC's RSV vaccine guidance says a minor illness like a cold is not a reason to delay, but people with a moderate or severe illness should wait until they recover. Tell the clinician or pharmacist how you feel on the day of your shot so they can advise you.
Which flu shot is recommended for people 65 and older?
CDC prefers a high-dose, adjuvanted or recombinant flu vaccine for adults 65 and older. If none of these is available when you go, CDC says to get any other flu vaccine approved for your age instead of waiting. Call ahead to ask which flu vaccines are in stock before your visit.
