Does mosquito bites increase the risk of HIV?

Jul 25, 2025 Source: Cainiu Health

Dr. Liu Wenmin

Introduction

Mosquitoes ingest only a small amount of blood when they bite, and the HIV virus cannot survive or reproduce inside a mosquito's body. Furthermore, the virus cannot be transmitted to another person through a mosquito bite. Therefore, simple mosquito bites do not increase the likelihood of contracting AIDS, and there is no need to worry about this. However, the risk of infection significantly increases if you have unprotected contact with the blood or engage in unprotected sexual activity with someone infected with HIV.

Generally speaking, mosquito bites do not increase the risk of HIV infection. The risk increases only when engaging in high-risk behaviors involving direct blood contact. Detailed analysis is as follows:

During a mosquito bite, only a small amount of blood is ingested. Moreover, the HIV virus cannot survive or reproduce inside mosquitoes, and it will not be transmitted to others through mosquito bites. Therefore, simple mosquito bites do not increase the likelihood of contracting HIV, and there is no need to be anxious about this.

If unprotected blood contact or sexual activity occurs with someone infected with HIV, the risk of infection significantly increases. These situations are considered high-risk behaviors, which have nothing to do with mosquito bites. Active protective measures should be taken to avoid such contact.

Prevention of HIV should focus on avoiding high-risk behaviors. If there is suspicion of possible infection, it is important to seek testing at a professional institution as soon as possible in order to promptly implement intervention measures.

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