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in Biology by (31.5k points)

Typhoid fever is caused by

(a) Giardia

(b) Salmonella

(c) Shigella

(d) Escherichia

1 Answer

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Best answer

The correct option is (b) Salmonella.

Explanation:

Salmonella typhi causes typhoid fever in human beings. It is characterised by constant fever due to the infection of intestine. Giardia is a flagellate protozoan, lamblia species of this protozoan causes disease giardiasis, a prolonged diarrhoeal disease of humans.

Bacterial genus Shigella causes shigellosis or bacillary dysentery, 

Escherichia coli is a facultative anaerobes, found in the intestine of human beings.

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