HIV, AIDS, and Mosquitoes

Everyone is concerned about the possibility of contracting HIV (Human Immunodeficiency Virus) / AIDS (Acquired Immunodeficiency Syndrome or Acquired Immune Deficiency Syndrome). An obvious question is “If HIV can be transferred through hypodermic needles, then why can’t HIV be spread through mosquitoes?”

This is a very good question, and it has not yet been absolutely answered. However, take comfort in knowing that it is highly unlikely that mosquitoes can transfer HIV. Here are a few facts.

1. HIV, unlike malaria, does not replicate in mosquitoes.
2. The blood left on the mouthparts of a mosquito after a feeding is very small.
3. Mosquitoes inject their saliva and suck blood through different tubes. (Note: Common infections from mosquitoes normally come from the injection of mosquito saliva.)
4. Currently, no one has documented a case of an HIV transmission through a mosquito.

These facts are comforting, but common sense cannot be ignored. HIV is spread through blood, and any time blood in any quantity is being transferred from one person to another, there may be a chance for just about any disease to be transferred as well. At this point, it appears highly improbable that HIV can be spread through mosquitoes, but it would be irresponsible to say that it could never happen.