How long is the incubation period for H1N1 influenza?

Mar 08, 2023 Source: Cainiu Health
Disease description:

I've heard that influenza A has a certain incubation period. How long is the incubation period for influenza A?

Doctor's answer (1)
Dr. Guo Xiheng
Influenza A, also known as A-type influenza virus infection, is an acute respiratory infectious disease that can spread through airborne droplets and direct contact. The virus has a broad host range, is highly contagious, and spreads rapidly, causing cross-species infections among humans and animals. Influenza A is an acute illness with an incubation period typically lasting 1 to 3 days, although in some patients it may extend up to two weeks. It commonly causes symptoms such as fever, cough, nasal congestion, and runny nose.