Se. Ansay et Cw. Kaspar, SURVEY OF RETAIL CHEESES, DAIRY PROCESSING ENVIRONMENTS AND RAW-MILK FOR ESCHERICHIA-COLI O157-H7, Letters in applied microbiology, 25(2), 1997, pp. 131-134
Escherichia coli was isolated from 58% (11/19) of retail soft and semi
-soft cheeses tested, but E. coli 0157:H7 was not detected. The presen
ce of E. coli in retail cheeses and the lack of baseline data on the p
revalence of serotype 0157:H7 strains prompted us to survey ingredient
s and the environment in 15 cheese and dairy plants. Escherichia coli
0157:H7 was not detected in any of the 1104 samples tested, including
42 raw milk samples. These results suggest that serotype 0157:H7 is no
t prevalent within dairy product ingredients and processing environmen
ts.