When does the flu season start? When does it end?

While seasonal influenza (flu) viruses are detected year-round in the United States, flu is most common during the fall and winter. The exact timing and duration of flu seasons can vary, but influenza activity often begins to increase in October. Most of the time flu activity peaks between December and February, although activity can last as late as May.

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1. What types of flu vaccine are available?
2. When does the flu season start? When does it end?
3. Can a flu shot give me the flu?
4. Is this year's vaccine a good match?
5. When did this flu season peak?
6. How many pediatric deaths has the flu caused?
7. Why do we count pediatric flu deaths and not adult flu deaths?
8. How does this flu season compare to past seasons?
9. What are strain types?
10. Why does it matter which flu strains are common in a flu season?
11. What is the difference between a pandemic and a normal flu season?
12. When should I get vaccinated?
13. Does the flu vaccine work right away?
14. Does the flu shot wear off if I get it too early?
15. What protection does the flu vaccine provide if I do get sick with flu?
16. Why do I need a new flu shot every year?
17. Where can I get a flu vaccine?