Figure 1.

Etiology of pneumonia in hospitalized children. In 2219 children hospitalized in the Etiology of Pneumonia in the Community Study, 2506 pathogens were detected. Shown is the percentage of patients with a positive result for each pathogen (on the x-axis) and the total numbers of each pathogen that were detected (numbers beside the bars). Pathogens other than those highlighted here were detected in 78 children, including Staphylococcus aureus (in 22 children), Streptococcus pyogenes (in 16), viridans streptococci (in 13), Chlamydophila pneumoniae (in 12), Haemophilus influenzae (in 9), other gram-negative bacteria (in 9), and other Streptococcus species (in 4). Flu, influenza virus; hADV, human adenovirus; hCoV, human coronavirus; hMPV, human metapneumovirus; hRV, human rhinovirus; Mpn, Mycoplasma pneumoniae; PIV, parainfluenza virus; RSV, respiratory syncytial virus; Spn, Streptococcus pneumoniae.