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If mosquitoes can spread malaria why not the HIV Virus?

If mosquitoes can spread malaria why not the HIV Virus?
Niall from County Derry (Age 35-44)

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One Response

  1. When a mosquito bites a person it does not inject any blood (either its own or from a person it has bitten previously) into the victim – only saliva. Malaria and other infections can be transmitted in the saliva in this way, but not HIV.

    In theory, a very small amount of human blood may contaminate the insect’s mouth parts if it were to take a blood meal from a HIV-infected person, but it is likely that the amount of virus in the blood would be very small. The insects will clean their mouthparts after biting, reducing the amount of virus even further. Finally insects after taking a blood meal will not bite another human for some time, so even if some virus remained it is would become inactivated as the virus is not well suited to survival outside the body for any length of time.

    For these reasons, mosquitoes are not thought to be in any way involved in the transmission of HIV

    Kevin Kerr, Consultant Microbiologist and Fellow of the Royal College of Pathologists

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