Partner services in adults with acute and early HIV infection.
To examine the yield of HIV partner services provided to persons newly diagnosed with acute and early HIV infection (AEH) in San Diego, United States.



Observational cohort study.



The study investigated the yield (i.e. number of new HIV and AEH diagnoses, genetically linked partnerships and high-risk uninfected partners) of partner services (confidential contact tracing) for individuals with AEH enrolled in the San Diego Primary Infection Resource Consortium 1996-2014.



A total of 107 of 574 persons with AEH (19%; i.e. index cases) provided sufficient information to recruit 119 sex partners. Fifty-seven percent of the 119 recruited partners were HIV infected, and 33% of the 119 were newly HIV diagnosed. Among those newly HIV diagnosed, 36% were diagnosed during AEH. There were no significant demographic or behavioral risk differences between HIV-infected and HIV-uninfected recruited partners. Genetic sequences were available for both index cases and partners in 62 partnerships, of which 61% were genetically linked. Partnerships in which both index case and partner enrolled within 30 days were more likely to yield a new HIV diagnosis (P = 0.01) and to be genetically linked (P < 0.01).



Partner services for persons with AEH within 30 days of diagnosis represents an effective tool to find HIV-unaware persons, including those with AEH who are at greatest risk of HIV transmission.
aDivision of Infectious Diseases, University of California San Diego (UCSD), San Diego, California, USA bSection of Infectious Diseases and Tropical Medicine cDivision of Pulmonology, Department of Internal Medicine, Medical University of Graz, Graz, Austria dInstitute for Genomics and Evolutionary Medicine, Temple University, Philadelphia, Pennsylvania eVeterans Affairs Healthcare System, San Diego, California, USA.
Nella
N
Green
Martin
M
Hoenigl
Antoine
A
Chaillon
Christy M
CM
Anderson
Sergei L
SL
Kosakovsky Pond
Davey M
DM
Smith
Susan J
SJ
Little
D000293:Adolescent; D000328:Adult; D002140:California; D015331:Cohort Studies; D016358:Contact Tracing; D015658:HIV Infections / Q000175:diagnosis* / Q000188:drug therapy*; D006801:Humans; D055815:Young Adult