(A) Etiology of community-acquired pneumonia (CAP) in the adult population in the United States from 2010 to 2012 (from 2488 cases). (B) Etiology of CAP in the adult population in Europe from 2003 to 2014 (from 3854 cases). Possible reasons that may explain the challenge in identifying the etiology of pneumonia include difficulty in obtaining samples from the lower respiratory tract, the effect of antibiotic use prior to sample collection and low sensitivity of some diagnostic tests.
Reprinted by permission from Springer Nature: Nature Reviews Disease Primers. Torres A, Cilloniz C, Niederman MS, et al. Pneumonia. Nat Rev Dis Primers 2021; 7:25. Copyright © 2021.
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