HIV, also known as human immunodeficiency virus (HIV), is the pathogen of AIDS. When it invades the human body, it can selectively attack immune cells and nerve cells, leading to cellular immune deficiency, leading to infections such as bacteria, fungi, viruses and protozoa, and even cancer and eventually death.
It is difficult to find AIDS early after infection, and it can only be identified if there are many fatal infections. Laboratory tests can be confirmed by detecting HIV antibodies in patients. After a person is infected with the virus, white blood cells in the body will produce antibodies against the virus. If the test results confirm that there are HIV antibodies in the body, it means that the person has been infected.