Which one of the following statements about West Nile virus is FALSE?
A)The disease is maintained in a horse-human-horse cycle.
B)The disease is maintained in a bird-mosquito-bird cycle.
C)Most human cases are subclinical or mild.
D)The disease caused by the virus can sometimes cause a fatal encephalitis.
E)The virus was introduced to the United States in 1999 in the New York City area.

Question

Quizplus · Accepted Answer

West Nile virus is maintained in a bird-mosquito-bird cycle, not a horse-human-horse cycle. Horses and humans can become infected, but they are dead-end hosts and cannot transmit the virus to others.

Which One of the Following Statements About West Nile Virus