isolation of bacillus cereus from wounds and burns

the culture results of 203 cases with different wounds were studies 150 of the latter were burn cases (mainly second and third degree burns), and 53 were of other types (surgical, traumatic, ect). four subtypes of bacillus cereus were isolated upon culture, and the different toxins produced in dht broth with 0.1% glucose were assessed. the lethal toxin was injected intravenously to syrian rats, none of whom died. vpr factor was assessed in the 4 subtypes. three subtypes produced vpr in significant amounts.