Foodborne infection surveillance shows stable Listeria, Salmonella, Shigella rates, increase in other pathogensFoodborne illness surveillance shows mixed trends for different bacteria in 2019

A surveillance report from the Foodborne Diseases Active Surveillance Network (FoodNet) analyzed preliminary incidence and trends of infections with pathogens transmitted commonly through food across 10 U.S. sites during 2019. The report did not specify population characteristics, sample size, or follow-up duration. No specific interventions or exposures were studied, and no comparator groups were defined.

The main findings indicate the incidence of infections caused by Listeria, Salmonella, and Shigella remained unchanged during the surveillance period. In contrast, incidence of infections caused by all other pathogens reported to FoodNet increased. The report did not provide specific effect sizes, absolute numbers, p-values, or confidence intervals for these trends. Safety and tolerability data were not reported.

Key limitations include the preliminary nature of the data, lack of detailed methodology reporting, and absence of population or sample size information. The report did not address funding sources or potential conflicts of interest. As surveillance data without intervention comparisons, these findings serve primarily for public health monitoring rather than direct clinical practice guidance. The increased incidence of other foodborne pathogens warrants continued surveillance but does not establish causal relationships or suggest specific clinical actions.