Question

why HIV virus does not travel through mosquito

Answer 1

The human T cell is a very specific host cell for HIV. When a mosquito feeds on a person with HIV in his or her blood, the HIV enters the insect's gut, which does not contain human T cells. The virus thus has no host cell in which to replicate and it is broken down by the mosquito's digestive system.

Answer 2

Because it is a acquired disease.