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Prevalence of Mycoplasma pneumoniae among children hospitalized for community-acquired pneumonia who underwent real-time polymerase chain reaction (PCR) testing, by time and study site, January 2010–June 2012. Prevalence = (number of M. pneumoniae PCR-positive nasopharyngeal/oropharyngeal [NP/OP] specimens/ total number of NP/OP specimens that underwent PCR testing) × 100.
