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Diseases spread by mosquitoes need to be able to replicate inside the mosquito. Not all viruses, bacteria, or other organisms are capable of replicating in mosquitoes. malaria and Dengue and Yellow fever have part of their life cycle in mosquitoes, and are able to infect them and replicate in them. HIV, on the other hand, cannot replicate in mosquitoes, because it has no proteins with which to bind to any mosquito cells. HIV can be ingested by a mosquito, but it can't infect the mosquito and replicate in it, so the mosquito can't spread HIV. Not all viruses are carried by mosquitos.

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16y ago

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