An outbreak of febrile gastroenteritis associated with delicatessen meat contaminated with Listeria monocytogenes.

In June 2001, the Los Angeles County Department of Health Services/Public Health conducted a cohort study of an outbreak of acute febrile gastroenteritis among 16 of 44 healthy attendees of a catered party. The median age of the attendees who became ill was 15.5 years.

Botulism due to Clostridium baratii type F toxin.

Botulism results from consumption of preformed toxin or in vivo toxin elaboration in wounds or intestine. Of U.S.

Campylobacter upsaliensis: Another pathogen for consideration in the United States.

While evaluating quinolone resistance in a sample of Campylobacter isolates recovered from patients with campylobacteriosis in Los Angeles County, California, in 1998, we discovered that the second most frequently isolated species was Campylobacter upsaliensis (6 [4%] of 155 isolates). The ability of laboratories to recover this species may be dependent on the culture conditions and the media used. Three dogs living in the households of 2 of these 6 patients had C.