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Altered cell-mediated immunity in asymptomatic colombian natives with positive or indeterminate serology for HTLV-I

Journal of Acquired Immune Deficiency Syndromes and Human Retrovirology, ISSN: 1077-9450, Vol: 19, Issue: 2, Page: 121-123
1998
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Article Description

Although HTLV-I infection has been associated with immunosuppression in symptomatic patients, no controlled study has been done in asymptomatic carriers. We evaluated delayed-type hypersensitivity (DTH) to seven antigens by multitest cell-mediated immunity (CMI) in 40 Colombian Indians, 10 HTLV- I-seropositive asymptomatic patients, and 30 matched controls. Multitest CMI was placed in the forearm and was read 48 hours later by the same physician. A positive reaction was defined as ≤2 mm. Hypoergic response was defined as <2 of 7 positive reactions per case or control. We found that HTLV-I- seropositive people had fewer positive reactions than matched controls (50% versus 64%, respectively; p < .04) but no significant difference was found in these populations in the evaluation of hypoergic responses. This study suggests the presence in asymptomatic HTLV-I-positive Colombian Indians of a marginal alteration of cell-mediated immunity that cannot be classified as hypoergic.

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