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Swine Toxoplasmosis. Ingestion of undercooked infected pork is considered an important source of human toxoplasmosis. Serologic screening could have future use for surveillance of animal populations and certification of freedom from Toxoplasma gondii. Results on three serologic tests for the diagnosis of toxoplasmosis by modified agglutination test (MAT), enzyme-linked immunosorbent assay (ELISA), and Sabin-Feldman dye test (DT), are provided. The conditional covariances for sensitivity and specificity proportions, cSe and cSp, are defined. The data are a part of an extensive analysis by Gardner et al. (2000). Test Sensitivity Specificity ELISA 73% 86% MAT 83% 90% DT 54% 91% Tests cSe cSp ELISA, MAT 0.08 0.04 MAT, DT 0.09 0.04 DT, ELISA 0.09 0.03 (a) Find sensitivity and specificity of a parallel combination of ELISA and MAT tests. (b) Find sensitivity and specificity of a serial combination of MAT and DT tests. (c) Which test would you favor: a parallel combination of ELISA and MAT or a serial combination of MAT and DT?
Adi S.
A person can acquire toxoplasmosis from a. pseudocysts in raw meat b. oocysts in air c. cleaning out the cat litter box d. all of these
Which species does not cause human disease? a. Toxoplasma gondii b. Entamoeba histolytica c. Dictyostelium discoideum d. Trichomonas vaginalis
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