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Symptoms start two hours to five days after exposure. [3] Cholera is caused by a number of types of Vibrio cholerae, with some types producing more severe disease than others. [2] It is spread mostly by unsafe water and unsafe food that has been contaminated with human feces containing the bacteria. [2] Undercooked shellfish is a common source. [9]
Although Koch was convinced that the bacterium was the cholera pathogen, he could not entirely procure critical evidence that the bacterium produced the symptoms in healthy subjects (an important element in what was later known as Koch's postulates). His experiment on animals using his pure bacteria culture did not lead to the appearance of the ...
As of November 16, the Haitian Health Ministry reported the number of dead to be 1,034, with hospitalizations for cholera symptoms totaling over 16,700. [90] The outbreak was blamed on a camp of Nepalese United Nations peacekeepers; this was disputed, but since acknowledged by the United Nations. [91]
Cholera toxin (also known as choleragen and sometimes abbreviated to CTX, Ctx or CT) is an AB5 multimeric protein complex secreted by the bacterium Vibrio cholerae. [ 1 ] [ 2 ] CTX is responsible for the massive, watery diarrhea characteristic of cholera infection. [ 3 ]
The sixth cholera pandemic (1899–1923) was a major outbreak of cholera beginning in India, where it killed more than 800,000 people, and spreading to the Middle East, North Africa, Eastern Europe, and Russia.
Symptoms of the disease appear between 12 hours and 5 days of infection; however, only 10% of infected people show severe symptoms of watery diarrhoea, vomiting and leg cramps. [8] Cholera is diagnosed through a stool test or rectal swab, and today treatment takes the form of an oral rehydration solution (ORS).
Other symptoms include vomiting and muscle cramps. [25] Water loss can lead to dehydration which can be mild to moderate to severe. Moderate to severe dehydration requires immediate treatment. V. cholerae is the most common pathogen that causes cholera. The gold standard for detecting cholera is through cultures of stool samples or rectal swabs.
The oral cholera vaccine, while effective for cholera, is of questionable use for travelers' diarrhea. [6] Preventive antibiotics are generally discouraged. [3] Primary treatment includes rehydration and replacing lost salts (oral rehydration therapy).
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