Why aids is not cause by mosquito?

There are several reasons why AIDS is not caused by mosquitoes:

1. AIDS is caused by a virus, not a parasite. AIDS is caused by the human immunodeficiency virus (HIV), which is a retrovirus. Mosquitoes, on the other hand, are insects that transmit parasites, such as malaria parasites. Retroviruses and parasites are entirely different types of organisms and cannot cause similar diseases.

2. Mosquitoes do not feed on blood from infected individuals only. Mosquitoes feed on blood from a wide range of animals, including humans, birds, and other mammals. Even if a mosquito were to feed on blood from an individual infected with HIV, it does not mean that the mosquito would become infected with HIV or would be able to transmit the virus to another individual.

3. HIV cannot survive outside of the human body. HIV cannot survive for long periods outside of the human body. The virus is fragile and susceptible to environmental conditions, such as heat, sunlight, and drying. Even if a mosquito were to ingest HIV-infected blood, the virus would likely be destroyed before it could be transmitted to another individual.

It's important to understand that the way a disease is transmitted is determined by the specific mode of transmission of the pathogen that causes the disease. For example, diseases like malaria are transmitted through the bite of infected mosquitoes, but AIDS is primarily transmitted through unprotected sexual contact, sharing contaminated needles or blood products, or from an infected mother to her child during birth, breastfeeding, or pregnancy.