Directly from the CDC.
The period when an infected person is contagious depends on the age and health of the person. Studies show that most healthy adults may be able to infect others from 1 day prior to becoming sick and for 5-7 days after they first develop symptoms. Some young children and people with weakened immune systems may be contagious for longer than a week.
So yes, you are contagious before you get symptoms.
Maybe only 36,000 people die from the flu each year (in the US)... but I'm sure that if you are one of the loved ones of one of those people the fact that its not that many people doesn't really interest you...



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