[Vibrio parahaemolyticus in mollusks]. / Ricerca del Vibrio parahaemolyticus in molluschi.

Research on Vibrio parahaemolyticus from mollusks. On 284 samples of edible mollusks from different sources, 12 bacterial strains of Vibrios related to Vibrio parahaemolyticus by cultural and biochemical tests have been isolated; that is 4.3% on the total of the samples examined. The proceeding for isolation and the meaning of this research with reference to microbiological parameters required by the actual legislation on the control of edible mollusks are also discussed.

An outbreak of group A food-borne streptococcal pharyngitis.

A food-borne outbreak of pharyngitis from group A streptococcus developed in people attending wedding banquets in the same restaurant on July 5-8, 1986. Of the 300 people interviewed, 179 reported illness; pharyngeal swabs were taken from 115 ill people; from 63 (53%) of them group A streptococci, belonging to serotype T28, M28, were isolated. Statistical analysis performed using chi-square and Cochran's test showed that a prawn hors-d'oeuvre served on July 5 and squills or/and custard cake served on July 7 could have been a possible source of infection. Six people on the staff, 5 of whom belonged to the family of the restaurant manager, and the manager's three young daughters were colonized by the same group A serotype. A possible previous diffusion of the strain among the staff followed by contamination of the food was suspected.