Flu Season 2026-2027: What You Need to Know About This Year's Shots
As summer draws to a close, pharmacies and doctor's offices across the United States are rolling out updated flu vaccines for the 2026-2027 season. CVS Pharmacy and MinuteClinic announced on August 27 that they are now offering the new shots nationwide, with both appointment and walk-in options available. A CVS Health survey found that 63% of Americans say they are likely to get a flu shot this season—roughly the same as the past two years. Most of those planning to vaccinate intend to do so by the end of October, according to the survey.
This year brings a significant development: the first mRNA flu vaccine, mFLUSIVA, developed by Moderna, has been approved by the FDA for adults aged 50 and older. It is reported to be about 25% more effective than traditional shots for that age group. However, availability may be limited initially, as pharmacies and health systems ordered vaccines before the approval was finalized.
When Should You Get Your Flu Shot?
Health experts generally recommend getting vaccinated in September or October, before flu season peaks in December through February. "Different parts of the country experience an earlier surge of the flu, so they might get the flu shot in September, but generally I recommend sometime in October and no later than November," said Dr. Stephen Thacker, a pediatric infectious diseases specialist at the Medical University of South Carolina. It takes about two weeks for the vaccine to provide full protection, so getting it early enough is key.
The Centers for Disease Control and Prevention (CDC) recommends annual flu vaccination for everyone aged six months and older, with special emphasis for those at higher risk: children under five, pregnant women, people with chronic health conditions, and seniors over 65. Flu shots remain free for most people with health insurance.
Why This Year Is Different: Federal Guidance in Flux
For the first time in decades, the usual federal guidance on flu and other respiratory vaccines is not coming from the CDC as expected. The Trump administration has pulled back on some longstanding vaccine recommendations, and the CDC's independent advisory panel is embroiled in a court battle. The CDC did not respond to questions about any new fall guidance.
In response, leading medical groups—including the American Academy of Pediatrics, the American Academy of Family Physicians, and the American College of Obstetricians and Gynecologists—have banded together to issue their own vaccination guidelines. They are also promoting a new website, SpreadTheFacts.org, to provide clear, science-based information. "There's been a lot of confusion and chaos regarding vaccine recommendations," said Dr. Sandra Fryhofer of the American Medical Association.
This is a sharp departure from the norm. Typically, the CDC's recommendations influence state policies and insurance coverage. With federal messaging in flux, public health experts worry that vaccination rates could drop further. Already, less than half of U.S. adults had been immunized against any respiratory virus by November last year, according to a poll from the National Foundation for Infectious Diseases.
The New mRNA Flu Vaccine: What It Means
The approval of mFLUSIVA marks a milestone in flu prevention. Unlike traditional vaccines, which are grown in eggs or cells, mRNA vaccines use a small piece of genetic code to trigger an immune response. This technology allows for faster updates and production, which could be a major advantage in responding to evolving flu strains.
However, the vaccine is currently only approved for people aged 50 to 64. Younger adults and children will continue to receive traditional shots this year. Dr. Thacker noted that there may be operational hurdles: "There might be an availability issue just operationally due to the timing of when the pharmacies and health systems needed to start ordering the vaccine."
Despite the promise of mRNA, experts emphasize that all flu vaccines remain effective at reducing severe illness. Last year, shots prevented an estimated 10 million flu-related illnesses, according to federal data. The flu kills an estimated 45,000 people annually in the U.S., and the last two seasons were especially harsh, with unusually high numbers of child deaths—most of them in unvaccinated children.
What This Means for You
As you plan your fall vaccinations, the key takeaways are: get your flu shot in September or October for best protection, and don't wait too long. Check with your local pharmacy or doctor's office about availability, especially for the new mRNA option if you're over 50. Vaccination remains one of the most effective ways to protect yourself and your family from serious flu complications.
The confusion around federal guidance shouldn't deter you. The medical community is united in recommending annual flu shots for nearly everyone aged six months and older. With high-risk groups especially vulnerable, staying up to date is more important than ever. As the CVS Health survey shows, most Americans plan to get vaccinated—joining that majority could make all the difference this winter.
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