Multiple Choice
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
Correct Answer:

Verified
Correct Answer:
Verified
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