How long is pneumonia contagious?

Depends. Most pathogens that cause pneumonia are not contagious. Some organisms like MRSA can spread to healthy contacts and cause colonization. Some organisms like the virus, influenza can cause pneumonia and are contagious during the illness. Drug sensitive tuberculosis is contagious until several weeks into effective multi-drug therapy.

Related Questions

How long is community aquired pneumonia contagious?

Depends.. Many causes of community acquired pneumonias are not truly transmissible from person to person but rather normal flora in the normal person. Many respiratory pathogens that do spread do not however necessarily cause pneumonia in the recipient. Read more...

Help please? How long after contact with contagious pneumonia does it affect you?

Pneumonia. It depends on the type of pneumonia, your age, your general health among other things. From the time of infection, it could take as little as a day, or as much as a week or so, for symptoms to appear. Read more...
Varies. If infected with a pneumonia-causing organism, it takes as little as 1 to 3 days or as long as 7 to 10 days for symptoms to appear. Read more...