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The onset of TD usually occurs within the first week of travel, but may occur at any time while traveling, and even after returning home, depending on the incubation period of the infectious agent. [11] Bacterial TD typically begins abruptly, but Cryptosporidium may incubate for seven days, and Giardia for 14 days or more, before symptoms ...
Enterotoxigenic Escherichia coli (ETEC) is a type of Escherichia coli and one of the leading bacterial causes of diarrhea in the developing world, [1] as well as the most common cause of travelers' diarrhea. [2] Insufficient data exists, but conservative estimates suggest that each year, about 157,000 deaths occur, mostly in children, from ETEC.
In contrast, a survey of long-distance Appalachian Trail hikers found more than half the respondents reported at least one episode of diarrhea that lasted an average of two days. (Infectious diarrhea may last longer than an average of two days; certain forms of non-infectious diarrhea, caused by diet change etc., can be of very brief duration).
Enterotoxigenic E. coli (ETEC) produces a toxin that acts on the intestinal lining, and is the most common cause of traveler's diarrhea. Enteropathogenic E. coli (EPEC) can cause diarrhea outbreaks in newborn nurseries. Enteroaggregative E. coli (EAggEC) can cause acute and chronic (long-lasting) diarrhea in children.
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It is a common cause of diarrhea in those who are hospitalized and is frequently associated with antibiotic use. [32] Staphylococcus aureus infectious diarrhea may also occur in those who have used antibiotics. [33] Acute "traveler's diarrhea" is usually a type of bacterial gastroenteritis, while the persistent form is usually parasitic. [34]
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The most common form of dysentery is bacillary dysentery, which is typically a mild sickness, causing symptoms normally consisting of mild abdominal pains and frequent passage of loose stools or diarrhea. Symptoms normally present themselves after 1–3 days, and are usually no longer present after a week.