Det er også slik at sannsynligheten for HIV-overføring ved en enkelthendelse er relativt liten. For å sette perspektiv på det; jeg mener at sjansen for overføring er ca. 0.4% hvis man faktisk blir stukket av ei sprøyte som har vært brukt av en HIV-positiv.
Fant også kjapt følgende tekst:
No meta-analysis estimates currently exist for insertive anal sex (inserting the penis into the anus, also known as topping) but two individual studies were conducted to calculate this risk. The first, published in 1999, calculated the risk to be 0.06% (equivalent to one transmission per 1,667 exposures). However, due to the design of the study, this number likely underestimated the risk of HIV transmission. The second study, published in 2010, was better designed and estimated the risk to be 0.11% (or 1 transmission per 909 exposures) for circumcised men and 0.62% (1 transmission per 161 exposures) for uncircumcised men.
http://www.catie.ca/en/pif/summer-20...k-exposure-hiv