SCIENCE
VIRUS AND BACTERIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which term best describes an organism that transmits a disease without getting sick itself?
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parasite
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vector
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host
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pathogen
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Explanation:
Detailed explanation-1: -A vector is an organism that does not cause disease itself but that transmits infection by conveying pathogens from one host to another. Vectors may be mechanical or biological.
Detailed explanation-2: -Other viral diseases transmitted by vectors include chikungunya fever, Zika virus fever, yellow fever, West Nile fever, Japanese encephalitis (all transmitted by mosquitoes), tick-borne encephalitis (transmitted by ticks).
Detailed explanation-3: -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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