Cd4 <200 Cells / Ul Amounts) Or Very Sick People

many for all skin tests of which show no reaction (anergy). Anergy occurs probably due to inhibitory antibodies, or because so many T-cells have arrived in the affected body region that too few left to lead to significant skin reaction. False-positive results can occur when patients have received non-tuberculous mycobacterial infections or the BCG vaccine. However, the effect of BCG vaccination on TST wanes after several years; after this time,…

September 3, 2018