Salmonella sp. Tied to Multistate Outbreak Isolated from Wastewater, United States, 2022.

We isolated Salmonella enterica serovar Senftenberg in raw wastewater from 2 Pennsylvania wastewater treatment facilities during June 2022. Whole genome sequencing revealed 4 isolates separated by <4 single nucleotide polymorphisms from S. enterica Senftenberg in a cluster from the 2022 nationwide outbreak linked to contaminated peanut butter.

Outbreak-associated Baildon found in wastewater demonstrates how sewage monitoring can supplement traditional disease surveillance.

Non-typhoidal is a common cause of gastroenteritis worldwide, but current non-typhoidal surveillance is suboptimal. Here, we evaluated the utility of wastewater monitoring to enhance traditional surveillance for this foodborne pathogen. In June 2022, we tested raw sewage collected twice a week from two treatment plants in central Pennsylvania for non-typhoidal and characterized isolates using whole-genome sequencing.