the most common and violent form of dysentery, caused by bacteria of the genus Shigella, seen most often in warm parts of the world where sanitation is poor and large groups of people are crowded together. The
disease is spread through the feces of carriers who have the bacteria in their intestines; some carriers may have diarrhea, but others may not. Infection comes after eating or drinking from something that has become contaminated; even touching
a contaminated object and then touching one's mouth can cause infection. Attacks are always acute after the incubation period
of a few days, with a high fever and sometimes shock and delirium. Bowel movements may be as many as 30 to 40 a day. An attack is usually over within a few weeks, although in a child it may
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