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Penelope Dennehy, MD, pediatric infectious diseases specialist at Hasbro Children's Hospital, addresses additional questions parents have about the illness.
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Pneumonia is an inflammation of the lungs. It can be caused by bacteria, a virus or even fungi. The recent cases of pneumonia in Rhode Island are thought to be caused by Mycoplasma pneumoniae bacteria. Mycoplasma infections commonly cause "walking pneumonia," a mild pneumonia that usually does not require hospital care.