RESUMEN
Fifty samples of raw milk were randomly collected from fayoum markets for bacteriological examination. The average counts of enterococci, coliform group, staphylococci, clostridium, aerobic spreformers and Bacillus cereus were, 80 * 10[4], 12 * 10[3], 17 * 10[2], 3.5 * 10,20 * 10[2] and 3.5 * 10 CFU/ ml respectively. All samples were free from salmonella. In addition psychrotrophic, mesophilic and lactic acid bacteria counts were counted in all the samples. On the other hand, 94.5%, 94.4%, 100% and 11.8% of indentified isolates were Streptococcus faecalis, enteropathogenic Escherichia coli, Bacillus cereus and enterotoxigenic Staphylococcus aureus respectively
RESUMEN
A total of 137 strains isolated from human sources obtained from clinical and subclinical cases were examined for their physiological and biochemical characterization in relation to their enterotoxigenicity. Significant correlation between enterotoxin production and coagulase, thermonuclease, protein A, mannitol fermentation and hemolysin formation was observed. On the other hand, nonsignificant correlation with the other examined characterization was observed. About 31% of the studied strains produced enterotoxins A, B, C, D where enterotoxin A was the most prevalent. Few strains [1.5%] produced more than one enterotoxin