After biting a bird, a mosquito becomes infected with West Nile virus. It then it bites a human and transfers West Nile virus into the human's bloodstream. Which organism(s) is the vector in this case?
A)human only
B)mosquito only
C)bird only
D)mosquito and bird
E)mosquito and human

Question

Quizplus · Accepted Answer

The vector in this case is the mosquito because it is the organism that carries and transmits the West Nile virus from the bird to the human.

After Biting a Bird, a Mosquito Becomes Infected with West