Template: Risk of acquiring HIV

{| class="wikitable" style="float:right; clear:right; font-size:85%; margin-left:15px;"
|- style="background:#efefef; "
|+ Average per act risk of getting HIV<br/>by exposure route to an infected source
|- style="background:#efefef; "
! style="width: 100px" abbr="Route" | Exposure route
! style="width: 130px" abbr="Infections" | Chance of infection
|-
! style="text-align: left"| Blood transfusion
| 90%<ref name="Blood Transfusion Risk">{{cite journal |last1=Donegan |first1=Elizabeth |last2=Stuart |first2=Maria |last3=Niland |first3=Joyce C. |last4=Sacks |first4=Henry S. |last5=Azen |first5=Stanley P. |last6=Dietrich |first6=Shelby L. |last7=Faucett |first7=Cheryl |last8=Fletcher |first8=Mary Ann |last9=Kleinman |first9=Steven H. |last10=Operskalski |first10=Eva A. |last11=Perkins |first11=Herbert A. |last12=Pindyck |first12=Johanna |last13=Schiff |first13=Eugene R. |last14=Stites |first14=Daniel P. |last15=Tomasulo |first15=Peter A. |last16=Mosley |first16=James W. |title=Infection with Human Immunodeficiency Virus Type 1 (HIV-1) among Recipients of Antibody-Positive Blood Donations |journal=Annals of Internal Medicine |date=November 15, 1990 |volume=113 |issue=10 |pages=733-739 |doi=10.7326/0003-4819-113-10-733 |url=https://annals.org/aim/article-abstract/704236/infection-human-immunodeficiency-virus-type-1-hiv-1-among-recipients?doi=10.7326%2f0003-4819-113-10-733 |access-date=11 May 2020}}</ref>
|-
! style="text-align: left"| Childbirth <small>(to child)</small>
| 25%<ref name=Coovadia>{{cite journal | author = Coovadia H | title = Antiretroviral agents—how best to protect infants from HIV and save their mothers from AIDS | journal = N. Engl. J. Med. | volume = 351 | issue = 3 | pages = 289–292 | year = 2004 | pmid = 15247337 | doi = 10.1056/NEJMe048128 }}</ref>{{clarify|date=January 2019|reason=This is only concerning highly active antiretroviral therapy or HAART}}
|-
! style="text-align: left"| Needle-sharing injection drug use
| 0.67%<ref name=MMWR2005>{{cite journal |vauthors=Smith DK, Grohskopf LA, Black RJ, Auerbach JD, Veronese F, Struble KA, Cheever L, Johnson M, Paxton LA, Onorato IM, Greenberg AE | title = Antiretroviral postexposure prophylaxis after sexual, injection-drug use, or other nonoccupational exposure to HIV in the United States: recommendations from the U.S. Department of Health and Human Services. | journal = MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports / Centers for Disease Control | volume = 54 | issue = RR-2 | pages = 1–20 | date = 21 January 2005 | pmid = 15660015 }}</ref>
|-
! style="text-align: left"| Percutaneous needle stick
| 0.30%<ref name=AFP2007>{{cite journal | author = Kripke C | title = Antiretroviral prophylaxis for occupational exposure to HIV. | journal = American Family Physician | volume = 76 | issue = 3 | pages = 375–6 | date = 1 August 2007 | pmid = 17708137 }}</ref>

|-
! style="text-align: left"| Receptive anal intercourse<sup>*</sup>
| 0.04–3.0%<ref name=Trans2010>{{cite journal |vauthors=Dosekun O, Fox J | title = An overview of the relative risks of different sexual behaviours on HIV transmission. | journal = Current Opinion in HIV and AIDS | volume = 5 | issue = 4 | pages = 291–7 | date = July 2010 | pmid = 20543603 | doi = 10.1097/COH.0b013e32833a88a3 }}</ref>

|-
! style="text-align: left"| Insertive anal intercourse<sup>*</sup>
| 0.03%<ref>{{cite book|last=Cunha|first=Burke|title=Antibiotic Essentials 2012|year=2012|publisher=Jones & Bartlett Publishers|isbn=9781449693831|pages=303|url=https://books.google.ca/books?id=Xv-9TSdixgwC&pg=PA303|edition=11}}</ref>

|-
! style="text-align: left"| Receptive penile-vaginal intercourse<sup>*</sup>
| 0.05–0.30%<ref name=Trans2010/><ref name=LancetT2009>{{cite journal |vauthors=Boily MC, Baggaley RF, Wang L, Masse B, White RG, Hayes RJ, Alary M | title = Heterosexual risk of HIV-1 infection per sexual act: systematic review and meta-analysis of observational studies. | journal = The Lancet Infectious Diseases | volume = 9 | issue = 2 | pages = 118–29 | date = February 2009 | pmid = 19179227 | doi = 10.1016/S1473-3099(09)70021-0 | pmc=4467783}}</ref>

|-
! style="text-align: left"| Insertive penile-vaginal intercourse<sup>*</sup>
| 0.01–0.38%<ref name=Trans2010/><ref name=LancetT2009/> 

|-
! style="text-align: left"| Receptive oral intercourse<sup>*§</sup>
| 0–0.04%<ref name=Trans2010/> 

|-
! style="text-align: left"| Insertive oral intercourse<sup>*§</sup>
| 0–0.005%<ref>{{cite journal |vauthors=Baggaley RF, White RG, Boily MC | title = Systematic review of orogenital HIV-1 transmission probabilities. | journal = International Journal of Epidemiology | volume = 37 | issue = 6 | pages = 1255–65 | date = December 2008 | pmid = 18664564 | pmc = 2638872 | doi = 10.1093/ije/dyn151 }}</ref>

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! colspan=5 style="border-right:0;"| <sup>*</sup> assuming no condom use <br /> <sup>§</sup> source refers to oral intercourse<br/>performed on a man
|}<noinclude>

==References==
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