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Volume 8, Number 1—January 2002

Research

Prevalence and Genetic Profiling of Virulence Determinants of Non-O157 Shiga Toxin-Producing Escherichia coli Isolated from Cattle, Beef, and Humans, Calcutta, India

Asis Khan*, Shinji Yamasaki*†, Toshio Sato†, Thandavarayan Ramamurthy*, Amit Pal*, Simanti Datta*, Nandini Roy Chowdhury*, Suresh Chandra Das‡, Asim Sikdar‡, Teizo Tsukamoto§, Sujit Kumar Bhattacharya*, Yoshifumi Takeda¶, and Gopinath Balakrish Nair*#Comments to Author 
Author affiliations: *National Institute of Cholera and Enteric Diseases, Calcutta, India; †Research Institute, International Medical Center of Japan, Shinjuku-ku, Tokyo, Japan; ‡Indian Veterinary Research Institute, Belgachia, Calcutta, India; §Osaka Prefectural Public Health Institute, Osaka, Japan; ¶National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, Japan; #International Centre for Diarrhoeal Disease Research, Dhaka, Bangladesh

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Table 6

Serotype, phenotypic and genotypic traits of Shiga toxin-producing Escherichia coli strains, India

Strain no. Serotype Origin Genotype (PCR/colony hybridization)
Chromosomal genes
Plasmid genes
Phenotype
stx1 stx2 eae hlyA etpD katP espP Hemolysis SFa Verob Stx1 Stx2
AK-40 O11:H8 Human +/+ -/- +/+ +/+ -/- +/+ -/+ E-hly + ND ND ND
AK-11 ONT:H18 Human +/+ -/- -/- -/- -/- -/- -/- E-hly + + + -
AK-18 O156:H7 Human +/+ -/- -/- -/- -/- -/- -/- - + + + -
AK-27 ONT:H19 Human +/+ -/- -/- -/- -/- +/+ -/- - + + + -
AK-30 O7:H6 Human +/+ -/- -/- -/- -/- -/- -/- - + + + -
AK-32 ONT:NM Human +/+ -/- -/- -/- -/- -/- -/- - ND ND ND ND
AK-33 O159:H12 Human +/+ -/- -/- -/- -/- -/- -/- E-hly + + + -
AK-26 O159:H9 Human -/- +/+ -/- -/- -/- -/- -/- - + + - +
AK-29 O110:H16 Human -/- +/+ -/- -/- -/- -/- -/- - + + - +
AK-14 ONT:H14 Human +/+ +/+ -/- +/+ -/- -/- -/+ E-hly + + + +
AK-28 O43:H2 Human +/+ +/+ -/- +/+ -/- -/- -/- - + + + +
AK-31 O96:H19 Human +/+ +/+ -/- -/- -/- -/- -/- - ND ND ND ND
P-33-2-26 ONT:H2 Cow +/+ -/- +/+ +/+ +/+ +/+ -/- E-hly + + + -
AK-38 O103:H2 Cow +/+ -/- +/+ +/+ +/+ +/+ -/- - + - - -
P-179-101 O146:H1 Cow +/+ -/- -/- +/+ -/- -/- -/+ E-hly + + + -
C-45-3-19 O149:HNT Cow +/+ -/- -/- -/- -/- -/- -/- - + + + -
AK-35 O22:H16 Cow +/+ -/- -/- -/- -/- +/+ -/- - + + + -
AK-39 O9B:H5 Cow +/+ -/- -/- -/- -/- -/- +/+ E-hly + + + -
C-5-1-13 O82:H8 Cow -/- +/+ -/- +/+ -/- -/- -/+ E-hly + + - +
AK-1 O2:H25 Cow -/- +/+ -/- -/+ -/- +/+ -/- - + + - -
AK-37 O22:NM Cow -/- +/+ -/- +/+ -/- -/- +/+ - ND ND ND ND
C-2-1-15 O28ac:H21 Cow +/+ +/+ -/- +/+ -/- -/- -/+ E-hly + + + +
C-3-2-25 ONT:H34 Cow +/+ +/+ -/- +/+ -/- -/- -/+ E-hly + + + +
C-3-3-42-6 ONT:H19 Cow +/+ +/+ -/- -/- -/- -/- -/+ E-hly + + + +
P-33-2-4 O88:HNT Cow +/+ +/+ -/- +/+ -/- -/- -/+ E-hly + + + +
AK-36 O159:H12 Cow +/+ +/+ -/- -/- -/- -/- -/- E-hly + + + +
AK-16 ONT:H21 Beef +/+ -/- +/- -/- -/- -/- -/- - + + + -
AK-12 O20:H12 Beef +/+ +/+ -/- -/- -/- -/- -/- ND + + + -
AK-13 O110:HNT Beef +/+ +/+ -/- -/- -/- -/- -/- ND + + + -
AK-17 O172:NM Beef +/+ +/+ -/- +/+ -/- +/+ -/+ E-hly + + + +

aFermentation of sorbitol.
bVero cell cytotoxicity.
NT, Not typable; ND, Not determined; NM, nonmotile.

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