Sex between men, without condoms;
Sex between men and women is useless;
It is useless to have a one-night stand (for both men and women), or to have sex with people you don't know by shaking your mobile phone and other dating software (for both men and women);
People who have sex with people who are known to be infected with AIDS often have high-risk sex and do not use condoms. It is recommended to have an HIV test every three months.
(2) the spouse or sexual partner of HIV-infected persons;
(3) Drug addicts who share needles with others;
(4) Tooth extraction and tattooing in informal medical units (instruments that are not strictly disinfected may be used in the process);
(5) Other circumstances:
Patients with sexually transmitted diseases such as syphilis, gonorrhea and condyloma acuminatum;
Couples who are ready to get married suggest premarital examination;
It is recommended that pregnant women be tested when they are just found pregnant;
Babies born to mothers infected with AIDS.