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Influenza, commonly known as the flu, ... Typically, infection with an AIV has an incubation period of 3–5 days but can be up to 9 days.
The incubation period. This is the period of time from when you’re exposed to the flu virus to when you develop symptoms. It usually lasts two days. The contagious period. People with the flu ...
The human incubation period of avian influenza A (H5N1) is 2 to 17 days. [37] Once infected, the virus can spread by cell-to-cell contact, bypassing receptors. So even if a strain is very hard to initially catch, once infected, it spreads rapidly within a body. [ 38 ]
The terms "intrinsic incubation period" and "extrinsic incubation period" are used in vector-borne diseases. The intrinsic incubation period is the time taken by an organism to complete its development in the definitive host. The extrinsic incubation period is the time taken by an organism to develop in the intermediate host. [citation needed]
Flu season is an annually recurring time period characterized by the prevalence of an outbreak of influenza (flu). The season occurs during the cold half of the year in each hemisphere. It takes approximately two days to show symptoms. Influenza activity can sometimes be predicted and even tracked geographically.
That is exactly what happened with the 2009 H1N1 swine flu and the Spanish flu of 1918 pandemics. Influenza A subtypes Influenza A (but not B) also has subtypes labeled H and N.
Children should get a flu shot every year, starting when they are 6 months old, the CDC recommends. Children older than 6 months are also eligible for a COVID-19 shot. Children older than 6 months ...
The incubation period for all four serotypes is 1 to 7 days. [18] In immunosuppressed people, parainfluenza virus infections can cause severe pneumonia, which can be ...
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