Can mosquito bites transmit HIV?
Jul 25, 2025
Source: Cainiu Health
Dr. Liu Wenmin
Introduction
When bitten by mosquitoes, viruses cannot survive or multiply within their bodies, and they do not regurgitate blood back into others after biting. Therefore, viruses cannot enter a new host through this route. Simple mosquito bites do not lead to HIV transmission, so there is no need for excessive concern. However, if the skin is broken and there is direct contact with blood or bodily fluids from an individual infected with HIV, the virus may potentially enter the body through the wound.
Generally speaking, mosquito bites do not transmit the HIV virus. Currently, there is no evidence indicating that this transmission route can lead to viral spread; however, transmission may occur if there is other direct blood contact. If concerned, it is recommended to seek medical advice in advance. Detailed explanation is as follows:
When mosquitoes bite, the virus cannot survive or reproduce inside their bodies. Moreover, after biting, mosquitoes do not regurgitate previously ingested blood into another person. Therefore, the virus cannot enter a new host via this method, and simple mosquito bites alone cannot cause HIV transmission, so there is no need for excessive concern.
If the skin is broken and simultaneously comes into contact with blood or body fluids from an individual infected with HIV, the virus might enter the body through the wound. Such direct blood contact poses a risk of transmission. This situation is unrelated to mosquito bites and should be prevented by avoiding such contact at its source.
Prevention of HIV should focus on avoiding unsafe blood contact and sexual practices. If there is suspicion of infection risk, timely testing at a reputable institution is necessary for confirmation.
