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Through what is 70 percent of HIV transmitted?

Dec 03, 2025 Source: Cainiu Health
Dr. Liu Wenmin
Introduction
70% of HIV cases are transmitted through sexual contact, including unprotected sex between same-sex partners, opposite-sex partners, and individuals with multiple sexual partners. This is the primary route of HIV transmission worldwide. If symptoms such as persistent fever, fatigue, and swollen lymph nodes appear after high-risk sexual behavior, prompt medical evaluation and testing are recommended. The HIV virus can enter the body through mucous membranes in the genitals, anus, mouth, and other areas.

70% of HIV cases are transmitted through sexual contact, including unprotected sex between same-sex partners, opposite-sex partners, and individuals with multiple sexual partners. This is the primary route of HIV transmission worldwide. If symptoms such as persistent fever, fatigue, and swollen lymph nodes appear after high-risk sexual behavior, it is recommended to seek medical testing promptly.

During sexual contact, the HIV virus can enter a healthy person’s body through tiny breaks in the mucous membranes of the genitals, anus, or mouth. The virus is present in the blood, semen, prostatic fluid, vaginal secretions, and rectal fluid of infected individuals, making transmission highly likely upon exposure.

Unprotected sexual intercourse is the key factor driving sexual transmission. Having multiple sexual partners or frequently changing partners significantly increases the risk of infection. In same-sex anal intercourse, the anal mucosa is more prone to damage, resulting in relatively higher infection risk. Correct use of condoms can effectively prevent viral transmission.

It is important to maintain healthy sexual practices, consistently and correctly use condoms during every sexual encounter, and avoid having multiple partners or unprotected sex. Do not share personal items such as toothbrushes or razors that may come into contact with blood. Regular HIV testing helps monitor your health status and strengthen self-protection.

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