P160 Expansion of HIV Rapid Antibody Testing at Municipal STI Clinics - Chicago, 2007-2008

Wednesday, March 10, 2010
Pre-Function Lobby & Grand Ballroom D2/E (M4) (Omni Hotel)
Cathy Yanda, MPA1, James Tam Nuyen, MD2, Irina Tabidze, MD, MPH3, Charmaine Murray, MPA2 and William Wong, MD3, 1NCHHSTP, CDC, Chicago, IL, 2STI/HIV/AIDS Division, Chicago Department of Public Health, Chicago, IL, 3STI/HIV Prevention and Control Services Section, Division of STI/HIV/AIDS, Chicago Department of Public Health, Chicago, IL

Background: Chicago Department of Public Health (CDPH) STI Specialty Clinics offer confidential and anonymous HIV testing to all persons presenting for care.

Objectives: To describe changes in HIV antibody testing performed at CDPH STI clinics between 2007 and 2008.

Methods:  HIV testing data from 2007-2008 were analyzed from the implementation of routine HIV rapid testing in the municipal STI Specialty Clinics.

Results:   In 2007, 15,847 HIV antibody tests were performed. The majority (90%; 14,267/15,847) were conventional antibody tests; 10% (1,580/15,847) were rapid antibody tests.  In 2007, 2.1% of persons tested by HIV rapid antibody test received a positive HIV diagnosis, and <1% were positive by conventional method. In 2008, 17,773 HIV antibody tests were performed. Of 17,773 tests, 16,506 (93%) were rapid antibody tests and 1,267 (7%) were conventional antibody tests. Approximately 1% of persons tested were positive by HIV rapid test (161/16,506), while 0.1% (2/1,267) were positive by conventional antibody testing method. Between 2007 and 2008, the number of HIV tests performed increased by 12%. HIV rapid testing increased by 945% (from 1,580 tests in 2007 to 16,506 tests in 2008) while conventional testing decreased by 91% (14,267 tests in 2007 versus 1,267 tests in 2008). All (100%) persons who tested HIV positive by rapid antibody test received their preliminary positive test result as compared to 75% (100/133) of HIV positive persons who received their confirmatory test results in 2007.

Conclusions:  CDPH successfully integrated HIV rapid testing throughout the Chicago municipal STI clinics, thereby instituting the provision of same-day test results and eliminating the HIV test result disclosure visit.

Implications for Programs, Policy, and/or Research: STI clinics can integrate HIV point-of-care testing into their normal clinic screening practices without compromising the number of individuals receiving testing or the number of HIV positives identified.

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