Which Insect Functions in the Host-To-Host Transmission of Typhus

Question

Which insect functions in the host-to-host transmission of typhus?
A) rat flea
B) body or head louse
C) dog tick
D) deer tick

Accepted Answer

The body or head louse is responsible for the host-to-host transmission of typhus. The bacterium that causes typhus, Rickettsia prowazekii, is carried by infected lice and is transmitted when the lice feed on a human host. The other choices, such as the rat flea, dog tick, and deer tick, may be vectors for other diseases but are not involved in the transmission of typhus.