To Take the Flu Shot or Not: What to Know for Flu Season
Every fall, the same question comes up: should I get a flu shot?
For most people, current U.S. public-health guidance recommends annual influenza vaccination beginning at 6 months of age, unless there is a medical reason not to receive it.
The decision should be based on reliable medical information, not on the idea that a vaccine guarantees you will never get sick or, on the other extreme, that it cannot help because some vaccinated people still get influenza.
What the Flu Vaccine Is Designed to Do
Seasonal influenza vaccines are updated to target influenza viruses expected to circulate during the upcoming season.
The vaccine cannot prevent every respiratory illness. Colds, RSV, COVID-19, and other viruses can produce symptoms that people may casually call “the flu.”
Even influenza itself changes from season to season, so vaccine effectiveness varies.
The purpose is to reduce the risk of influenza and, importantly, to reduce the chance of severe illness and complications.
People who are vaccinated can still get influenza, but vaccination can reduce severity.
What Is Different for the 2026–2027 Season?
The U.S. influenza vaccine composition was updated for the 2026–2027 season.
The FDA selected new strains for this season based on surveillance of circulating viruses, including an updated H3N2 component.
That is one reason flu vaccination is seasonal rather than something you receive once for life.
The vaccine used this year is designed for this year’s expected influenza viruses.
Who Is at Higher Risk From Influenza?
Flu can make anyone miserable, but some people are more likely to develop serious complications.
Higher-risk groups include:
- Adults 65 and older
- Young children
- Pregnant people
- People with certain heart or lung conditions
- People with diabetes
- People with significant immune compromise
- People with certain chronic medical conditions
Vaccination is especially important for people at higher risk and for people who live with or care for them.
When Should You Get Vaccinated?
For most people, September or October is a practical time to receive the seasonal flu vaccine.
Vaccination can still be beneficial later in the season if influenza viruses continue circulating.
Some age groups and medical situations have different timing considerations, so ask your physician, pharmacist, or other qualified vaccine provider if you are unsure.
What If You Had a Reaction to a Vaccine Before?
Most people can receive influenza vaccine safely, but individual medical history matters.
Talk with your healthcare provider before vaccination if you have had a serious allergic reaction to a previous influenza vaccine, have a history of Guillain-Barré syndrome, are currently moderately or severely ill, or have another concern about a specific vaccine product.
Different formulations are available for different ages and medical situations.
Do not rely on a blog to decide whether a previous reaction represents a true contraindication.
Can the Flu Shot Give You the Flu?
Injected influenza vaccines do not cause influenza infection.
Some people develop temporary soreness, fatigue, headache, or low-grade fever after vaccination as the immune system responds.
Those side effects are different from influenza.
It is also possible to become infected shortly before vaccination or before the immune response has had enough time to develop, which can create the impression that the vaccine caused the illness.
Vaccination Is Not the Only Prevention Step
The flu shot is an important prevention tool, but everyday habits also matter.
During respiratory-virus season:
- Wash or sanitize hands regularly
- Cover coughs and sneezes
- Improve indoor air circulation when practical
- Stay home when you are ill
- Avoid close contact with vulnerable people when you are contagious
- Get adequate sleep and regular activity
- Manage chronic health conditions
No single strategy creates perfect protection.
Layers of prevention work better than relying on one habit.
Common Reasons People Hesitate
Some people skip the flu vaccine because they received it in a previous year and still got sick.
Remember that “flu-like” symptoms can be caused by many viruses. Even when the illness truly is influenza, vaccine protection is not 100 percent.
The more useful question is whether vaccination reduces the overall risk and severity of influenza at a population and individual level.
Others worry because they felt sore or tired after a previous dose. Short-lived side effects can occur and should be weighed against the risks of influenza itself, especially for people at higher risk of complications.
A clinician can help you sort ordinary side effects from a true contraindication.
Where Chiropractic Care Fits, and Where It Does Not
Chiropractic treatment is not a substitute for influenza vaccination, antiviral medication, or medical care for a serious infection.
At Homberg Chiropractic & Wellness, we focus on musculoskeletal function.
If coughing, inactivity, or illness leaves your neck or back feeling stiff after you recover, that can be evaluated as a musculoskeletal problem. But influenza itself is a viral infection and should be managed using appropriate medical guidance.
The Takeaway
For most people who do not have a contraindication, current CDC guidance continues to recommend annual influenza vaccination.
If you are unsure which vaccine is appropriate, whether you should delay it because you are sick, or how your medical history affects the decision, talk with your physician or pharmacist.
The goal is not to pressure people with fear. It is to make an informed decision using current information before flu activity rises.
Medical Disclaimer: This article is for educational purposes only and does not replace an in-person evaluation, diagnosis, or treatment plan from a licensed healthcare professional. If you have severe, worsening, or urgent symptoms, seek appropriate medical care.