<prompt> Toxins are implicated as the major pathogenic mechanism in all of the following bacterial diarrheas except -Vibrio choleraeShigella spVibrio parahemolyticusStaphylococcus aureus  <response>: Ans. is c i.e., Vibrio parahemolyticus No enterotoxin has been identified with vibrio parahemolyticus. The vibrio is believed to cause enteritis by invasion of the intestinal epithelium 