Mosquitoes spread disease by injecting infected saliva into the puncture wound when they bite someone. In order for a mosquito to transmit a disease, the virus has to be first be able to infect the mosquito. In an infected mosquito, the virus can spread throughout its body, so it can enter the salivary glands and be present in the saliva. Since HIV does not infect mosquitos, they cannot transmit the virus because there is no way for the HIV virus to leave the mosquito digestive tract and enter the salivary glands.
The government agency known as the CDC only relays information that was determined by scientists who work both within and outside of government and from all over the world. The scientists discover the information through scientific investigation. The scientists are not government bureaucrats who must push a certain narrative to promote an agenda.
Thanks, exDemMom.