Comparative tests for detection of plague antigen and antibody in experimentally infected wild rodents

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Abstract

The enzyme-linked immunosorbent assay (ELISA) was compared with other standard tests for detection of plague (Yersinia pestis) antibody and antigen in multimammate mice (Matomys coucha and M. natalensis) which were experimentally infected and then killed at daily intervals postinoculation. For detection of antibody in sera from M. natalensis, the immunoglobulin G (IgG) ELISA was equivalent in sensitivity to passive hemagglutination and more sensitive than the IgM ELISA and complement fixation. Antibody was first detected on postinfection day 6 by all four tests, but IgM ELISA titers had declined to undetectable levels after 8 weeks. For detection of fraction 1 Y. pestis antigen in rodent organs, the ELISA was less sensitive than fluorescent antibody but more sensitive than complement fixation or immunodiffusion. Plague fraction 1 antigen was detected in 16 of 34 bacteremic sera from M. coucha and M. natalensis. The threshold sensitivity of the ELISA was approximately 105 Y. pestis per ml.

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APA

Shepherd, A. J., Hummitzsch, D. E., Leman, P. A., Swanepoel, R., & Searle, L. A. (1986). Comparative tests for detection of plague antigen and antibody in experimentally infected wild rodents. Journal of Clinical Microbiology, 24(6), 1075–1078. https://doi.org/10.1128/jcm.24.6.1075-1078.1986

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