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Table 1 Isolation of pathogens (DEC strains by multiplex PCR) from the stools of children with diarrhea (cases) and children without diarrhea (controls)

From: Genotypic and phenotypic analysis of diarrheagenic Escherichia coli strains isolated from Brazilian children living in low socioeconomic level communities

Pathogen Children aged <2 years Children aged 2−5 years Children aged 6−10 years  
Cases Controls Cases Controls Cases Controls Total no. of children
  (n= 40) (n= 110) (n= 53) (n= 163) (n= 48) (n= 146) (n= 560)
Diarrheagenic E. coli        
aEPEC 7 (17.5) 13 (11.9) 5 (9.4) 13 (7.9) 4 (8.3) 7 (4.8) 49 (8.7)
tEPEC 1 (2.5) 0 0 0 2 (4.2) 0 3 (0.5)
EAEC 20 (50) 25 (22.7) 12 (22.6) 33 (20.2) 4 (8.3) 23 (15.7) 117 (20.9)
DAEC 5 (12.5) 10 (9.1) 15 (28.3) 18 (11.0)a 6 (12.5) 11 (7.5) 65 (11.6)
LT-ETEC 2 (5.0) 1 (0.9) 3 (5.7) 2 (1.2) 1 (2.1) 4 (2.7) 13 (2.3)
LT/ST-ETEC 0 0 1 (1.9) 0 1 (2.1) 0 2 (0.4)
EIEC 0 0 2 (3.8) 0 0 1 (0.7) 3 (0.5)
STEC 0 0 0 1 (0.6) 0 0 1 (0.2)
  All 35 (87.5) 49 (44.5)b 38 (71.7) 67 (41.1)c 18 (37.5) 46 (31.5) 253 (45.2)
Shigella spp. 1 (2.5) 0 2 (1.4) 1 (0.6) 0 0 4 (0.7)
Salmonella spp. 0 1 (0.9) 0 0 0 1 (0.7) 1 (0.2)
Giardia lamblia 6 (15) 5 (4.5) 3 (5.7) 8 (4.9) 1 (2.1) 0 23 (4.1)
Entamoeba histolytica 0 0 1 (1.9) 3 (1.8) 1 (2.1) 0 5 (0.9)
  1. ap = 0.0041; bp = 0.0001; cp = 0.0001, for the comparison between diarrhea and control samples.