Cholera in 1990.
D000349:Africa / Q000453:epidemiology; D000569:Americas / Q000453:epidemiology; D001208:Asia / Q000453:epidemiology; D002771:Cholera / Q000453:epidemiology*; D005060:Europe / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D010139:Pacific Islands / Q000453:epidemiology; D014944:World Health Organization