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Table 2 Etiologic agents among patients with acute bloody diarrhoea in selected hospitals in Kilifi and Nairobi Counties

From: Enteric pathogens and factors associated with acute bloody diarrhoea, Kenya

Lab Method Kilifi Nairobi Total n (%)
1. Direct Microscopy and concentration Case N = 174 n (%) Control N = 88 n (%) Case N = 110 n (%) Control N = 26 n (%) Case N = 284 n (%) Control N = 114 n (%)
 Trophozoites (n = 398)
   Entamoeba histolytica 8 (4.6) 0 (0) 21 (19.1) 1 (3.8) 29 (10.2) 1 (0.8)
   Giardia lamblia 0 (0) 0 (0) 4 (3.6) 1 (3.8) 4 (1.4) 1 (0.8)
   Trichomonas hominis 1 (0.6) 0 (0) 1 (0.9) 0 (0) 2 (0.7) 0 (0)
   E. histolytica & G. lamblia 0 (0) 0 (0) 2 (1.8) 0 (0) 2 (0.7) 0 (0)
 Cysts (n = 398)
   Entamoeba histolytica 25 (14.4) 1 (1.1) 14 (12.7) 1 (3.8) 39 (13.7) 2 (1.7)
   E. coli 6 (3.4) 3 (3.4) 1 (0.9) 0 (0) 7 (2.5) 3 (2.6)
   Giardia lamblia 0 (0) 0 (0) 4 (3.6) 2 (7.7) 4 (1.4) 2 (1.7)
   G. lamblia & E. histolytica 0 (0) 0 (0) 1 (0.9) 0 (0) 1 (0.4) 0 (0)
 Ova (n = 398)
   Trichuris trichuria 0 (0) 0 (0 0 (0) 1 (3.8) 0 (0) 1 (0.8)
   Ascaris lumbricoides 0 (0) 0 (0) 1 (0.9) 1 (3.8) 1 (0.4) 1 (0.8)
2. Stool culture
   Shigella 33 (20) 0 (0) 33 (0.3) 1 (3.8) 67 (23.6) 1 (0.8)
   E. coli 1 (0.6) 0 (0) 8 (7.2) 0 (0) 9 (3.2) 0 (0)
   Salmonella spp 1 (0.6) 0 (0) 2 (1.8) 0 (0) 3 (1.1) 0 (0)
   Yersinia enterocolitica 0 (0) 0 (0) 1 (0.9) 0 (0) 1 (0.35) 0 (0)