Is Pneumonia Contagious?
Because pneumonia is caused by microbes, pneumonia can be contagious. Pneumonia caused by chemical fumes or other poisons not made by infectious agents are not contagious.
Many contagious pneumonias have names such as bacterial pneumonia, viral pneumonia, Mycoplasma pneumonia and MRSA (Methicillin - Resistant Staphylococcus aureus) pneumonia that indicate the type of pathogen infecting the lung. Some pneumonias have names that are not as clear such as “walking pneumonia” that indicates a milder form of Mycoplasma pneumonia. There are many other descriptive terms such as community acquired pneumonia, hospital acquired pneumonia and aspiration pneumonia, for examples, that suggest the source of the organism(s) causing the pneumonia. They are all potentially contagious.