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美國疾病管制與預防中心(CDC)所公佈的數據
https://www.cdc.gov/hiv/risk/estimates/riskbehaviors.html
Estimated Per-Act Probability of Acquiring HIV from an Infected Source, by
Exposure Act*
與HIV帶源接觸的感染機率估計值
Type of Exposure Risk per 10,000 Exposures
接觸類別 每一萬次接觸的風險
Parenteral 腸外類
Blood Transfusion 輸血 9,250 = 92.5%
Needle-Sharing During Injection Drug Use 63 = 0.63%
共用針頭注射藥物
Percutaneous (Needle-Stick) 23 = 0.23%
經由皮膚(針頭扎到)
Sexual 性行為
Receptive Anal Intercourse 接受型肛交 138 = 1.38%
Insertive Anal Intercourse 插入型肛交 11 = 0.11%
Receptive Penile-Vaginal Intercourse 8 = 0.08%
接受型陰莖-陰道交
Insertive Penile-Vaginal Intercourse 4 = 0.04%
插入型陰莖-陰道交
Receptive Oral Intercourse 接受型口交 Low 非常低
Insertive Oral Intercourse 插入行口交 Low 非常低
Other 其他
Biting 牙齒咬 Negligible 可忽略
Spitting 吐口水 Negligible 可忽略
Throwing Body Fluids (Including Semen or Saliva) Negligible 可忽略
波濺體液 (包括精液或唾液)
Sharing Sex Toys 共用性玩具 Negligible 可忽略
*Factors that may increase the risk of HIV transmission include sexually
transmitted diseases, acute and late-stage HIV infection, and high viral
load. Factors that may decrease the risk include condom use, male
circumcision, antiretroviral treatment, and pre-exposure prophylaxis. None of
these factors are accounted for in the estimates presented in the table.
有些因素可能會增加HIV傳播的風險，包括其他性病、急性與晚期HIV感染、高病毒載量。
有些因素可能會降低HIV傳播的風險，包括使用保險套、割包皮、抗反轉錄病毒藥物與
接觸前預防。
這些因素都沒有納入上表的計算中。