"Let's say you had sex with someone who is HIV infected and the condom broke, or you found out only after unprotected sex that your partner had HIV. Can you reduce your risk of getting HIV from sex--or from a needlestick--by taking medications afterward? Yes. This is called postexposure prophylaxis, or PEP. The medications that are given are the same types that are used to treat HIV (antiretrovirals, or ARVs), and they usually are given as a combination of 3 medicines for 1 month. To work best, these ARVs should be taken as soon as possible after the exposure, and…"
"A person gets HIV when an infected person's body fluids (blood, semen, fluids from the vagina, or breast milk) enter his or her bloodstream. The virus can enter the blood through linings in the mouth, anus, or sex organs (the penis and vagina), or through broken skin. Both men and women can spread HIV. A person with HIV can feel okay and still transmit the virus to others. Pregnant women with HIV also can pass the virus to their babies. Common ways people get HIV include; sharing a needle to take drugs, having unprotected sex with an infected person You…"
"It is very unlikely, but possible. Some people, for example, are born with HIV, which they can pass to other people later in life when they start having sex. People can also pick up herpes through casual kissing — even from friends and family. Their herpes infections can then be passed on sexually. The chances of this happening are rare, so it’s not something to spend time worrying about. On the other hand, it’s another one of the many good reasons to always use condoms when you have sexual intercourse."