Why mosquitoes are not able to spread HIV when they can spread dengue virus, W.bancrofti,chiken guniya virus?

Question

It is understood that mosquitoes are injecting saliva(is it anasthetizing agent?) before drwaing blood from animals. HIV would not survive in mosquito saliva or mosquito blood or multiply inside mosquito body? If that is the case how mosquitoes are able to spread the chicken guniya viral disease, dengue viral disease, elephantiasis nematodes, malarail parasite, yellow viral fever. Can any one clarify my doubt?

Answer 1

Mosquitoes actually could spread HIV, but they are not good at it.

HIV is not a very tough virus. It doesn't do well when exposed to air, and mosquitoes are very small and therefore quite exposed to oxygen (the surface area-to-mass ratio is high). There tends to be a long amount of time between feeding too.

HIV doesn't multiply in mosquitoes. The other viruses, parasites etc are different in that they either survive well in the mosquito or actually breed in the mosquito and end up in the saliva of the mosquito (actually, it is more of a blood-thinning agent as opposed to an anesthetic)

I think that the only way that HIV could be spread by a mosquito would be if the female mosquito was interrupted during feeding on an infected person. If the same mosquito then immediately attempted to feed on a non-infected person and was smashed so that some of the mosquito's blood meal ended up on and in the non-infected person, an infection could occur. Even this scenario is not very probable.

Generally, HIV is spread by the exchange of bodily fluids on (and generally rather deep in) a body opening where there is some type of physical trauma that causes bleeding. Needle injection, anal sex etc help spread aids because these activities traumatize the body and create a place where the weak HIV can start its terrible work.

You ought to protect yourself from mosquitoes, but try not to worry about getting HIV from the mosquitoes, it's highly unlikely.

Warning: this is a highly politically charged issue. In such cases, its hard to get good answers because good answers are politically incorrect.

Answer 2

mosquitoes use animal blood incluing human blood as food . they utilise the protien present in blood to support them. as W. bancrofti or mararia parasite and dengue parasite and not virus complete they life cyc le in mosquites they spread these infections where as HIV does not complete its life cycle in mosquites and hence donot spread AIDS.

Answer 3

They don't spread, they BOOST

Malaria helps spreading AIDS in Africa by boosting the HIV in people's bodies for weeks at a time, and people weakened by HIV are, in turn, more vulnerable to malaria, in a deadly vicious circle.

Answer 4

your guesses are right, HIV is specific to the species, and cannot make its way into into moscito saliva (or survive in it)

Answer 5

HIV mosquito may be too weak to fly around and bite and may die in few seconds.