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Table 5 The results of blood culture, STA and ELISA in different stages of Brucellosis (number and the percentage of positive cases by each assay)

From: ELISA is superior to bacterial culture and agglutination test in the diagnosis of brucellosis in an endemic area in China

GroupAcute (< 8 weeks) N = 117Subacute (8–24 weeks) N = 78Chronic (>24 weeks) N = 40
Culture: N(% positivity)43 (36.75%)8 (10.26%)0 (0.00%)
STA: N(% positivity)88 (75.21%)45 (57.69%)17 (42.50%)
IgM by ELISA: N(% positivity)93 (79.49%)43 (55.13%)7 (17.50%)
IgG by ELISA: N(% positivity)110 (94.02%)78 (100%)38 (95.00%)
IgM and/or IgG by ELISA: N(% positivity)115 (98.30%)78 (100%)39 (97.50%)
  1. Note: STA: standard tube agglutination