HIV is not spread to humans by animals or insects, including mosquitoes. HIV is hard to transmit. You can keep yourself safe. The HIV virus must be in sufficient concentration in an infectious body fluid for transmission to occur. The infectious body fluid must then get into the body and into the bloodstream for an individual to become infected.
Many people are concerned about saliva as an infectious body fluid.
Saliva is not considered to be infectious because it is not sufficiently concentrated for transmission. In addition, there are enzymes in saliva that can break down the virus, and the ph of the mouth is detrimental to the survival of the virus. HIV does not survive well outside the human body. There is no way to tell if someone is infected with the virus without a blood test. If you have sex with someone infected with the virus, you are at risk of becoming infected.