Is the “stomach flu” really the flu?
Many people use the term "stomach flu" to describe illnesses with nausea, vomiting or diarrhea. These symptoms can be caused by many different viruses, bacteria or even parasites. While vomiting, diarrhea, and being nauseous or "sick to your stomach" can sometimes be related to the flu – more commonly in children than adults – these problems are rarely the main symptoms of influenza. The flu is a respiratory disease and not a stomach or intestinal disease.

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1. How do I know that I have the flu?
2. How does the flu spread?
3. How long is a person with flu virus contagious?
4. Can the flu be treated?
5. Why should people get vaccinated against the flu?
6. When should I get a flu vaccine?
7. How do flu vaccines work?
8. Is the “stomach flu” really the flu?
9. How many people get the flu each year?
10. Do other respiratory viruses circulate during the flu season?
11. How soon will I get sick if I’m exposed to the flu?
12. How do scientists determine which strains to protect against in a flu vaccine?
13. Can a flu vaccine give you the flu?
14. Why do I feel sick after getting a flu shot?
15. Why did I still get sick even after I got a flu shot?
16. Do I need to get a flu vaccine every year, or will the immunity carry over from last year’s vaccine?
17. Is it ever too early or too late to get a flu vaccine?
18. How can I learn more about the progress of the flu season?