Skin tests for the detection of Mycobacterial infections: achievements, current perspectives, and implications for other diseases.

Appl Microbiol Biotechnol · 2021 · PMC7780083 · PMID 33394146

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highly significantno p-value reported

Although there was a highly significant correlation between PPD and DPPD results among TB patients, assessment among participants without active TB but with previous BCG vaccination revealed a specificity of 86.4% DPPD that was much improved over the 42.1% observed for PPD (Badaro et al. 2020 ).

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