According the the Centers for Disease Control and Prevention (CDC) the answer is no. There is no evidence to support that likelihood exists. If HIV infected blood is taken by a mosquito the virus is digested or killed inside the body of the mosquito. Many studies have been conducted on this issue in the United States and abroad. There has not been a successful transfer of the virus from an infected source to another host by blood feeding insects under experimental conditions. The experts have concluded that the insects are not capable of such transmission. Many biological reasons would lead one to this same conclusion, but the extensive experimental studies are the most powerful evidence for the conclusion.
Two key factors emerged from the research. First, HIV does not replicate in mosquitoes; thus, mosquitoes cannot be a biological vector as they are for malaria, yellow fever, or dengue. In fact, mosquitoes digest the virus that causes AIDS. Second, there is little possibility of mechanical transmission (i.e., flying contaminated syringes); even though we know that HIV can be transmitted by dirty needles. The amount of “blood” on a mosquito’s mouth part is tiny compared to what is found on a “dirty” needle, making the risk from mosquito bites proportionally smaller than needle transmission. Calculations based on the mechanical transmission of anthrax and Rift Valley fever virus, both of which produce very high titers in blood unlike HIV, showed that it would take about 10,000,000 mosquitoes that first fed on a person with AIDS and then continued feeding on a susceptible person to get 1 transmission.
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