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Free Content The effect of immunodeficiency on cutaneous delayed-type hypersensitivity testing in HIV-infected women without anergy: implications for tuberculin testing

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Abstract:

SETTING: A collaborative study in four urban medical centers in the United States.

OBJECTIVE: To determine the effect of human immunodeficiency virus (HIV) infection and immunodeficiency on delayed type hypersensitivity (DTH) responses and the implications for interpretation of tuberculin reactions in non-anergic women with or at risk for HIV infection.

DESIGN: Demographic and behavioral information, HIV antibody testing, CD4+ lymphocyte counts, and cutaneous responses to DTH testing with mumps, Candida, tetanus toxoid, and tuberculin (purified protein derivative—PPD) antigens were obtained in 1184 women.

RESULTS: Reactions to one or more of the four antigens occurred in 436 HIV-seropositive and 356 high-risk seronegative women. Among non-anergic women, HIV-seropositives were less likely (P ≤ 0.05) to react to mumps (62% vs 81%), tetanus (72% vs 84%), and PPD (13% vs 19%). Induration in HIV-seropositive reactors was associated with CD4+ cell level for mumps (P = 0.004) and tetanus (P < 0.001), but not for Candida or PPD. HIV-seropositive reactors with CD4+ cell counts >500/mm3 did not have significantly smaller reactions than HIV-seronegatives for any antigen tested. PPD sizes were similar among HIV-seropositive reactors with CD4+ cell counts >500/mm3 (12.4 ± 7.4 mm) and HIV-seronegative reactors (12.0 ± 8.3 mm); induration ≥10 mm was seen in 16/173 (9.2%) seropositive women with CD4+ cell counts >500/mm3 and 41/356 (11.5%) seronegative women, respectively (P = 0.5).

CONCLUSION: Among HIV-infected women able to react to a DTH antigen, induration in response to that antigen was relatively intact at CD4+ counts >500/mm3. This suggests that degree of immunodeficiency should be considered when interpreting PPD reactions in HIV-infected persons.

Keywords: HIV; delayed type hypersensitivity testing; skin tests; tuberculin testing; women

Document Type: Regular Paper

Affiliations: 1: Division of Infectious Diseases, Department of Medicine, and Department of Epidemiology and Social Medicine, Montefiore Medical Center and Albert Einstein College of Medicine, Bronx, New York, USA 2: Division of Infectious Diseases, Department of Medicine, Miriam Hospital and Brown University School of Medicine, Providence, Rhode Island, USA 3: Division of Infectious Diseases, Department of Medicine, Wayne State University School of Medicine, Detroit, Michigan, USA 4: Centers for Disease Control and Prevention, Atlanta, Georgia, USA 5: School of Hygiene and Public Health, Johns Hopkins University, Baltimore, Maryland, USA

Publication date: August 1, 1999

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  • The International Journal of Tuberculosis and Lung Disease publishes articles on all aspects of lung health, including public health-related issues such as training programmes, cost-benefit analysis, legislation, epidemiology, intervention studies and health systems research. The IJTLD is dedicated to the continuing education of physicians and health personnel and the dissemination of information on tuberculosis and lung health world-wide.

    Certain IJTLD articles are selected for translation into French, Spanish, Chinese or Russian. They are available on the Union website

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