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Despite extensive diagnostic testing of 2259 adults with radiographically confirmed community-acquired pneumonia, researchers couldn’t pinpoint a specific pathogen in nearly two-thirds of the patients hospitalized with the illness, according to recent data.
The 2 ½-year prospective study by CDC researchers is one of the largest population-based pneumonia studies ever conducted in the United States. The results showed that researchers detected viruses in 27% of patients and bacteria in 14% of patients with pneumonia.
Mysterious Pneumonia Etiology. JAMA. 2015;314(12):1218. doi:10.1001/jama.2015.11209