flu incubation and contagious period
For the flu, the contagious period then lasts five to seven days into the illness. For children, the contagious period for the flu can last up to two weeks after they start feeling sick, even if they start feeling better before that. The contagious period for a cold lasts about three to four days into the illness. As a general rule, people with a cold are most contagious about three days after their initial exposure to the virus. For more information on colds, influenza and related topics, check out the links on the next page. 1.
In people with stomach flu, the incubation period may range from 4 hours to 1 to 2 days, depending on the type of virus that is causing the infection. Furthermore, some people are contagious during the stomach flu incubation period and others are not -- again, it depends on the type of virus that is causing the infection.