title: Watch your back.
mesh_terms: D002648:Child; D002675:Child, Preschool; D002681:China / Q000453:epidemiology; D004770:Enterovirus / Q000472:pathogenicity / Q000502:physiology; D006232:Hand, Foot and Mouth Disease / Q000175:diagnosis / Q000453:epidemiology* / Q000401:mortality / Q000821:virology; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000502:physiology; D007251:Influenza, Human / Q000191:economics / Q000453:epidemiology* / Q000821:virology; D014944:World Health Organization