[Evaluation of the incidence and @entity137 of samples of XXXX in various classes of foods sold and consumed in the State of Rio de Janeiro].

@entity1 @entity137 @entity6766 @entity39 @entity19 @entity95 @entity5259 @entity1412 @entity204
One hundred and fourteen strains of @entity5259 were isolated during presumptive plate-counts from 18 groups of industrialized, non-industrialized, crude or cooked food, belonging to 10 separate classes. Specific presumptive counts ranged from 10(2) to 6 X 10(3)/g or ml. Among these isolates, 13 strains were derived from 3 outbreaks of @entity6766 (involving a minimum of 57 @entity1 ), as determined by the assayed bacteriological quality of the ingested foods. As an adopted procedure to correlate @entity137 and ability to promote illness in @entity1 , culture fluids of all strains were assayed to determine their ability to increase vascular permeability ( @entity1412 ) to cause @entity39 in @entity95 skin and to kill albino @entity19 . @entity1412 was positive in 86.85% of the 114 strains, @entity204 of albino @entity19 occurred in 65.79% and a combination of @entity1412 and @entity204 was observed in 59.65%. @entity1412 plus @entity39 , or only @entity39 , occurred with 34.21% of the culture fluids. Death, @entity1412 and @entity204 with or without @entity39 , were demonstrated in the strains implicated with illness. This confirmed the known individuality of action exhibited by certain @entity5259 food-borne toxigenic factors. The low presumptive counts of this bacterium in the order of 10(2)-10(3)/g or ml found in food, implicated or not with illness, suggests that the recommended number of @entity5259 per g or ml of food sample should be reevaluated in our country. Furthermore, a wider range of food should be brought under bacteriological sanitary control for this species.
