Many studies have evaluated the role of Cryptosporidium spp. in outbreaks of enteric illness, but few studies have evaluated sporadic cryptosporidiosis in the United States. To assess the risk factors for sporadic cryptosporidiosis among immunocompetent persons, a matched case-control study was conducted in seven sites of the Foodborne Diseases Active Surveillance Network (FoodNet) involving 282 persons with laboratoryidentified cryptosporidiosis and 490 age-matched and geographically matched controls. Risk factors included international travel (odds ratio [OR] ‫؍‬ 7.7; 95% confidence interval [95% CI] ‫؍‬ 2.7 to 22.0), contact with cattle (OR ‫؍‬ 3.5; 95% CI ‫؍‬ 1.8 to 6.8), contact with persons >2 to 11 years of age with diarrhea (OR ‫؍‬ 3.0; 95% CI ‫؍‬ 1.5 to 6.2), and freshwater swimming (OR ‫؍‬ 1.9; 95% CI ‫؍‬ 1.049 to 3.5). Eating raw vegetables was protective (OR ‫؍‬ 0.5; 95% CI ‫؍‬ 0.3 to 0.7). This study underscores the need for ongoing public health education to prevent cryptosporidiosis, particularly among travelers, animal handlers, child caregivers, and swimmers, and the need for further assessment of the role of raw vegetables in cryptosporidiosis.

Newport-MDRAmpC infection is acquired through the US food supply, most likely from bovine and, perhaps, poultry sources, particularly among persons already taking antimicrobial agents.

We investigated a large outbreak of Salmonella enterica serotype Javiana among attendees of the 2002 U.S. Transplant Games, including 1,500 organ transplant recipients. Web-based survey methods identified pre-diced tomatoes as the source of this outbreak, which highlights the utility of such investigative tools to cope with the changing epidemiology of foodborne diseases.

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