Mosquitoes cannot transmit the virus that causes acquired immune deficiency syndrome ( AIDS ), for several reasons.
First of all, there is no contact between the saliva of the mosquito and the blood of the victim, respectively inoculated and withdrawn from the insect through different channels, not in communication with each other. If a blood residue remains on the sting, this would not reach the minimum quantity necessary to infect another person. Furthermore, if the blood that fed the mosquito was infected by the virus, it would be inactivated in a short time by the insect's digestive process . Therefore, HIV does not survive and does not reproduce inside the mosquito.
The risk is also excluded from epidemiological studies . If the infection were transmitted by insects, in fact, there would be peaks of infection among children, who do not have the possibility of contracting the infection via sexual contact and through exchange of syringes, but often they are mosquito points. AIDS among children, on the other hand, depends above all on the vertical transmission of the infection, that is, from the mother to the child during pregnancy or childbirth.
Finally, if mosquitoes transmit HIV, there would be seasonal peaks of contagion during periods of maximum infestation (summer months), as happens with many other diseases including malaria and yellow fever.
