Serological identification of enterotoxigenic staphylococci from cheese.
Single and double gel-diffusion techniques were employed to examine serologically coagulase-positive staphylococci from cheese for enterotoxigenicity. Supernatant fluid from sac cultures was examined for enterotoxins A and B. The results indicated that 9 of 155 cultures from market cheese and 7 of 77 cultures from food-poisoning cheese produced enterotoxin A, and that none of the cultures produced detectable levels of enterotoxin B. Results of serological tests were confirmed by intravenous injection of cats.
Donnelly
C B
CB
Milk and Food Research, National Center for Urban and Industrial Health, Public Health Service, Cincinnati, Ohio 43226.
Leslie
J E
JE
Black
L A
LA
Lewis
K H
KH