Table 1: EQAS serogrouping result of enteric pathogens, 2008-2013 (all the data were copied from WHO-Afro EQAS annual reports from 2008-2013).

Year of Participation TN of Isolates Serogrouped % of Correctly Serogrouped Isolates (P) % of Outlier (probability of an Error (1-P) Standard Error 95% CI
2008 8 7 (87.5%) E1 (12.5%) 0.117 0.65-1.104
2009 12 11 (91.7%) D2 for D1 (8.3%) 0.079 0.76-1.07
C. jejuni (2) C.jejuni (1) (50%) C.coli for C.j
(0.5)
V.mimicus (1) Vibrio (1) -
2010 12 11 (91.7%) (8.3%)
G (O:13)Not reported
0.079 0.76-1.07
C.jejuni (1) C.jejuni (1) 100% -
C. coli(1) C. coli (1)100%
S.enterica (D1&D2) (1) S.enterica for Citrobacter spp
2011 8 8 (100%) - -
2012 12 11 (91.7%) E4 for E1 (8.3%) 0.079 0.76-1.07
S.paratyphi (1) - S p for S.arizona
2013 12 11 (91.7%) A for C2-C3 (0.083) 0.079 0.76-1.07
Total 71 62 (87%)

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