| occurrence and characteristics of cs31a antigen-producing escherichia coli in calves with diarrhoea and septicaemia in argentina. | cs31a is a k88-related non-fimbrial adhesin first described on escherichia coli strains isolated from diarrhoeic and septicaemic calves. in this report, cs31a antigen was screened by immunological methods and confirmed by pcr among bovine e. coli isolates. in addition, cs31a-producing strains were characterized with respect to different fimbrial antigens, o-serogroup and other properties related to virulence. faecal or tissue specimens of 100 diarrhoeic or septicaemic calves and 27 older cattle ... | 2003 | 12710494 |
| shiga toxin-producing escherichia coli o157 in beef and chicken burgers, and chicken carcasses in buenos aires, argentina. | we describe the isolation and characterization of shiga toxin (stx)-producing escherichia coli (stec) o157:h7 from cooked and uncooked beef and chicken burgers and from chicken carcasses collected during sampling procedures in 2001 and 2002 in buenos aires city, argentina. of the 24 stec o157:h7 strains isolated, 20 were recovered from 19 (6.8%) out of 279 samples of beef and chicken burgers, and 4 strains from 4 (10.3%) out of 39 chicken carcasses. the samples were analyzed following the usda/f ... | 2009 | 19443067 |