The flu vaccine is an annual, not once-and-done. Flu mutates every year, and last year’s shot doesn’t cover this year’s strains. For kids, especially under 5, flu can be severe, and the vaccine is the best tool we have.
What it protects against
Seasonal influenza — typically two influenza A strains and one or two influenza B strains depending on the year’s formulation.
When it’s given
Annually starting at 6 months of age. Kids 6 months through 8 years getting flu vaccine for the first time (or who’ve only had one prior dose) need two doses at least 4 weeks apart their first season. After that, one dose a year.
Common side effects
Soreness at the injection site, mild fever, fatigue, occasional mild body aches for a day. The nasal spray (FluMist) is an option for kids 2 and up and has its own mild side effects (runny nose, congestion). The shot cannot give you the flu — it contains no live virus.
Common questions
“Does it really work if it’s not 100% effective?” Effectiveness varies year to year (often 40-60%). Even partial effectiveness reduces severity and hospitalization — the point isn’t perfect prevention; it’s reduced risk. “Shot or nasal spray?” Both are acceptable for eligible kids; ask your pediatrician which is in supply and a good fit.
Questions worth asking
- Does my kid need one dose or two this year?
- Is nasal spray an option for us?
- When’s the best time of year to get it?
How VisitRecall fits in
Track each year’s dose and any reaction. Health journal, parents hub.
FAQ
Best time to get the flu shot?
September or October in most of the U.S. is a common target, before cases climb.
Egg allergy?
Most kids with egg allergy can safely get flu vaccine. Discuss with your pediatrician.
If my kid had the flu, do they still need it?
Usually yes — it covers multiple strains, and one exposure doesn’t protect against the others.
