The main modes of transmission of HIV include sexual contact, blood transmission, and mother-to-child transmission, and its survival time in the air ranges from as little as 1 hour to as long as 15 days, depending on the presence or absence of media such as body fluids and environmental factors.
HIV can survive for up to 1 hour if exposed directly to dry air. If HIV is present in blood as a medium, it takes about 2 hours for blood containing a small amount of HIV to dry up naturally and for the virus to become inactivated, while blood rich in a large amount of HIV takes 2 to 4 hours for the virus to become inactivated. If HIV is present in liquid form at room temperature (around 25°C), it can survive for about 15 days. It takes 30 minutes at 56°C to deactivate the virus.
HIV is not yet curable. Any high-risk behavior that may expose you to HIV should be treated immediately by a doctor.