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How long is someone contagious for when they have the common cold, flu, or bacterial / viral bronchitis?

1 doctor weighed in
Dr. Raja Abusharr
Family Medicine

In brief: Contagious periods

The contagious period differs for each type of infection, even among different viruses! there is a range of values based on different infections ranging from common cold to influenza.
These vary from 24 hours to up to 2 weeks! you should ask your physician what infection you have and for how long you will be contagious. Common sense dictates that respiratory viruses travel by cough or sneeze.

In brief: Contagious periods

The contagious period differs for each type of infection, even among different viruses! there is a range of values based on different infections ranging from common cold to influenza.
These vary from 24 hours to up to 2 weeks! you should ask your physician what infection you have and for how long you will be contagious. Common sense dictates that respiratory viruses travel by cough or sneeze.
Dr. Raja Abusharr
Dr. Raja Abusharr
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