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10 Virus Carriers

        Animals | Animal Facts

  iStockphoto/Thinkstock (2) Parke John/Visual
  iStockphoto/Thinkstock (2) Parke John/Visual

MOSQUITO

Carrier of West Nile Virus When fall arrives and temperatures decrease, the mosquito population consequently declines. However, migration season is shortly after, and as birds and mosquitos travel, they bring the virus with them. There are currently 110 species of infected birds, and the number of mosquito species who can transmit the virus has jumped from one to eight.