HIV - Wikipedia, the free encyclopedia
Look at the estimated per act risk
Exposure Route Estimated infections per 10,000 exposures to an infected source
Blood transfusion 9,000[30]
Childbirth 2,500[31]
Needle-sharing injection drug use 67[32]
Percutaneous needle stick 30[33]
Receptive anal intercourse (2009 and 2010 studies) 170‡ (95% confidence interval 30-890) [29] / 143* (95% confidence interval 48-285)[28]
Receptive anal intercourse (based on data of a 1992 study)* 50[34][35]
Insertive anal intercourse for uncircumcised men(2010 study)* 62a (95% Confidence Interval 7-168)[28]
Insertive anal intercourse for circumcised men(2010 study)* 11a (95% Confidence Interval 2-24)[28]
Insertive anal intercourse (based on data of a 1992 study)* 6.5[34][35]
Low-income country female-to-male‡ 38 (95% Confidence Interval 13-110)[29]
Low-income country male-to-female‡ 30 (95% Confidence Interval 14–63)[29]
Receptive penile-vaginal intercourse* 10[34][35][36]
Insertive penile-vaginal intercourse* 5[34][35]
Receptive oral intercourse*§ 1†b[35]
Insertive oral intercourse*§ 0.5†b[35]
remember this is based on exposure to HIV positive person. The odds is ZERO if the person doesn't have HIV. You normally have to have repeated exposure to HIV to get infected. I know it sounds odd but it's the way it is. Why do some get HIV on the first try? Like I said - genetics, malnutrition and open sores.