Shigellosis, also known as bacillary dysentery in its most severe manifestation, is a
foodborne illness caused by infection by
bacteria of the genus
Shigella. It accounts for less than 10% of the reported outbreaks of foodborne illness in the
USA. Shigellosis rarely occurs in animals; it is principally a disease of humans and
primates such as monkeys and
chimpanzees. The causative organism is frequently found in water polluted with human
feces, and is transmitted via the
fecal-oral route. The usual mode of transmission is directly person-to-person hand-to-mouth, in the setting of poor hygiene among children.
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