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Am J Public Health. 2018 May;108(5):652-658. doi: 10.2105/AJPH.2018.304321. Epub 2018 Mar 22.

Undiagnosed HIV and HCV Infection in a New York City Emergency Department, 2015.

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Lucia V. Torian, Qiang Xia, Lisa A. Forgione, Howard Doo, and Sarah L. Braunstein are with the New York City Department of Health and Mental Hygiene (DOHMH), HIV Epidemiology and Field Services Program, New York, NY. Fabienne Laraque, Eric J. Rude, and Angelica Bocour are with DOHMH, Viral Hepatitis Program. Demetre C. Daskalakis is with DOHMH, Division of Disease Control. Uriel R. Felsen and Barry S. Zingman are with the Division of Infectious Diseases, Montefiore Medical Center, Bronx, NY. Herbert Rose and Adam Cole are with the Division of Laboratory Services, Montefiore Medical Center. Gary J. Williams and Robert F. Bridgforth are with Quest Diagnostics, San Clemente, CA.



To measure undiagnosed HIV and HCV in a New York City emergency department (ED).


We conducted a blinded cross-sectional serosurvey with remnant serum from specimens originally drawn for clinical indications in the ED. Serum was deduplicated and matched to (1) the hospital's electronic medical record and (2) the New York City HIV and HCV surveillance registries for evidence of previous diagnosis before being deidentified and tested for HIV and HCV.


The overall prevalence of HIV was 5.0% (250/4990; 95% confidence interval [CI] = 4.4%, 5.7%); the prevalence of undiagnosed HIV was 0.2% (12/4990; 95% CI = 0.1%, 0.4%); and the proportion of undiagnosed HIV was 4.8% (12/250; 95% CI = 2.5%, 8.2%). The overall prevalence of HCV (HCV RNA ≥ 15 international units per milliliter) was 3.9% (196/4989; 95% CI = 2.8%, 5.1%); the prevalence of undiagnosed HCV was 0.8% (38/4989; 95% CI = 0.3%, 1.3%); and the proportion of undiagnosed HCV was 19.2% (38/196; 95% CI = 11.4%, 27.0%).


Undiagnosed HCV was more prevalent than undiagnosed HIV in this population, suggesting that aggressive testing initiatives similar to those directed toward HIV should be mounted to improve HCV diagnosis.

[Available on 2019-05-01]

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