The biochemical characteristics, enterotoxigenicity and susceptibility to antibiotics are reported for 22 strains of species isolated from clinical specimens in the Western Region of Saudi Arabia. was the species most frequently observed; a high proportion of these strains fermented lactose, whereas lactose fermentation was not observed in strains of and Enterotoxigenicity, as judged by cytotoxicity in tissue culture was observed in three of four strains and six of seven strains, but in only one of 11 strains. Two schemes for the biochemical assessment of enterotoxigenicity were found to be in 91% and 86% agreement respectively with cytotoxicity studies and in 95% agreement with each other. No single biochemical test correlated fully with enterotoxigenicity, but 86% of strains that oxidased gluconate produced a cytotoxin. Most strains were inhibited by concentrations of gentamicin, amikacin, chloramphenicol and tetracycline achievable in plasma. Most strains were resistant to broadspectrum penicillins and many were also resistant to cefuroxime and cefoxitin.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error