Question

Dengue virus multiplies only once it gets inside the human body.

• A. False
• B. True

Answer 1

The correct option is A

False

By sucking the blood of an infected person, the mosquito becomes the vector of the dengue virus. The dengue virus multiplies first within the body of the mosquito. Virus reaches man through mosquitoes. The person gets infected by dengue fever. The virus then multiplies in the human body. So the virus multiplies inside the body of both human and mosquito. Scientists have discovered that mosquitoes avoid becoming ill by mounting an immediate, potent immune response to the virus. Their immune system does not eliminate the virus, however, which is why they are able to pass it on to a new victim.