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Question
Which of the following diseases are not transmitted by a vector?
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Solution
The correct option is C Typhoid
A vector in medicine is an organism that does not cause disease by itself but spreads the disease by conveying pathogens from one host to another. Plague is caused by the bacterium Yersinia pestis which is spread by fleas as a vector that lives on black rats. Rickettsia prowazekii causes the disease typhus which is spread via external parasites such as human lice and typhoid is a foodborne disease caused by Salmonella Typhi and does not require a vector for its transmission.
A vector in medicine is an organism that does not cause disease by itself but spreads the disease by conveying pathogens from one host to another. Plague is caused by the bacterium Yersinia pestis which is spread by fleas as a vector that lives on black rats. Rickettsia prowazekii causes the disease typhus which is spread via external parasites such as human lice and typhoid is a foodborne disease caused by Salmonella Typhi and does not require a vector for its transmission.
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