Can HIV be transmitted through ordinary kissing?
AIDS (acquired immunodeficiency syndrome) is a dangerous infectious disease that destroys the human immune system. It has a long incubation period, and once infection occurs, individuals gradually become vulnerable to opportunistic illnesses—such as malignant tumors. Many people fear AIDS intensely; thus, a common question arises: Can HIV be transmitted through ordinary kissing? Below, we provide a detailed explanation.

Can HIV be transmitted through ordinary kissing?
Under normal circumstances, casual or ceremonial kissing does not transmit HIV. However, intense, deep kissing cannot be entirely ruled out as a potential transmission route. Although HIV can be detected in saliva, the viral load is extremely low. For transmission to occur, a sufficient quantity of virus must be present. Furthermore, whether transmission via kissing is possible also depends on whether the site of entry into the body is suitable for HIV infection. The oral cavity (or gastrointestinal tract) is not a favorable entry point for HIV. Even if HIV enters the mouth, it is degraded like other proteins and thereby rendered noninfectious.

Knowledge Extension: How is HIV transmitted?
1. Mother-to-child transmission
When a pregnant woman is infected with HIV, the virus is also present in her genital tract. During vaginal delivery, the infant passes through the birth canal and may become infected with HIV.
2. Sexual transmission
HIV is not a human papillomavirus (HPV); this statement in the original text is incorrect. HIV infection primarily occurs through sexual contact. While individual susceptibility and indirect transmission routes cannot be entirely excluded, sexual intercourse remains the most common mode of transmission. Individuals without a fixed sexual partner face a higher risk of infection.
3. Bloodborne transmission
This includes transfusion of blood or blood products contaminated with HIV. It also encompasses the use of unsterilized injection needles, acupuncture needles, or other medical instruments capable of piercing the skin—including dental instruments, obstetric tools, and surgical equipment—that have been contaminated with HIV.

The above provides an overview addressing whether HIV can be transmitted through ordinary kissing. We hope this information is helpful to you.