How long is a person with flu virus contagious?

The period when an infected person is contagious depends on the age of the person. Adults may be contagious from one day prior to becoming sick and for three to seven days after they first develop symptoms. Some children may be contagious for longer than a week.

Show All Answers

1. What are the symptoms of the flu?
2. When is the flu season in the United States?
3. How does the flu spread?
4. What is Influenza (flu)?
5. Does the flu have complications?
6. How do I find out if I have the flu?
7. How soon will I get sick if I am exposed to the flu?
8. How long is a person with flu virus contagious?
9. How many people get sick or die from the flu every year?