Table 6.

Comparison of growth of 125 bacteria strains on the SSI enteric medium to growth on other media used for detection of enteropathogens

Medium type and strain (no. of strains tested)No. (%) of strains exhibiting growthNo. (%) of strains whose growth wasa:
>10 and <50 CFU>50 CFU
SSI enteric medium
 Salmonella spp. (58)58 (100)9 (16)49 (84)
 Shigella spp. (28)28 (100)10 (36)18 (64)
 Yersinia spp. (12)12 (100)None12 (100)
 Vibrio spp. (8)7 (87)6 (86)1 (14)
 E. coli (16)16 (100)4 (25)12 (75)
 Aeromonasspp. (3)3 (100)2 (67)1 (33)
 Total (125)124 (99)31 (25)93 (75)
XLD plate
 Salmonella spp. (58)58 (100)12 (21)46 (79)
 Shigella spp. (28)26 (92)26 (100) NAb
 Yersinia spp. (12)12 (100)8 (67)4 (33)
 Vibrio spp. (8)7 (87)4 (57)3 (43)
 E. coli (16)10 (62)8 (80)2 (20)
 Aeromonasspp. (3)3 (100)2 (67)1 (33)
 Total (125)116 (93)60 (52)56 (48)
HE medium
 Salmonella spp. (58)56 (96)3 (5)53 (95)
 Shigella spp. (28)23 (82)12 (52)11 (48)
 Yersinia spp. (12)12 (100)2 (17)10 (83)
 Vibrio spp. (8)8 (100)3 (38)5 (62)
 E. coli (16)8 (50)7 (88)1 (12)
 Aeromonasspp. (3)3 (100)None3 (100)
 Total (125)110 (88)27 (25)83 (75)
SS agar plate
 Salmonella spp. (58)58 (100)6 (10)52 (90)
 Shigella spp. (28)23 (82)18 (78)5 (22)
 Yersinia spp. (12)12 (100)1 (8)11 (92)
 Vibrio spp. (8)6 (75)3 (50)3 (50)
 E. coli(16)1 (6)1 (100)NA
 Aeromonas spp. (3)3 (100)1 (33)2 (67)
 Total (125)103 (82)30 (29)73 (71)
CIN agar
Yersinia spp. (12)12 (100)None12 (100)
  • a An inoculum of ∼200 CFU was applied for all 125 bacteria.

  • b NA, not applicable.