Question
The parasite shown in the picture below is the insect vector for ?
A. Rickettsia typhi.
B. Rickettsia rickettsi.
C. Rickettsia prowazekii.
D. Rickettsia akarai.
Show Answer
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Correct Answer » C
Explanation
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Ans:C. Rickettsia prowazekii.
The insect vector shown in the photograph above represent Louse.
Amongst the options provided ‘Louse’ is the insect vector only for Rickettsia prowazekii.
Louse
- Louse is a wingless insect.
- They have narrow heads and oval, flattened bodies.
- Their compound eyes are reduced in size or absent.
- Their antennae are short with three to five segments, and their mouth parts, which are retractable into their head, are adapted for piercing and sucking
- Infectious diseases associated with human lice include epidemic typhus, relapsing fever, and trench fever, which are caused by Rickettsia prowazekii, Borrelia recurrentis, and Bartonella quintana, respectively.
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