Original title: Monitoring disease trends and characterization of non-typhoidal Salmonella isolates from community wastewater in a mid-sized city in Florida, USA: a retrospective study
People with Salmonella can shed the bacteria into sewage, even if their infections are never recorded by a clinic. Researchers tested wastewater from a Florida city and found Salmonella genetic material in many samples. Changes in wastewater levels came before changes in hospitalizations by one week. They also grew live bacteria from some samples and found several types, including types missed by clinical surveillance.
Imagine checking a town’s shared kitchen sink to figure out what people have been cooking. The clues get mixed together, and some dishes leave traces even when nobody tells you what they made. In this paper, the sink is the city’s wastewater, and the traces are Salmonella that can reveal infections across the community, including ones clinical checks miss.
Many Salmonella infections never appear in clinical surveillance, so officials may miss part of the community’s disease burden. Tracking wastewater could give public health teams an earlier signal and reveal strains that clinical monitoring does not detect.
This study examined wastewater from one mid-sized Florida city over a defined period. It shows that wastewater trends led hospitalizations by one week, but does not establish that wastewater is a validated early-warning system for bacterial disease. The abstract says further research is needed to validate that use and its integration into a One Health framework.
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Monitoring disease trends and characterization of non-typhoidal Salmonella isolates from community wastewater in a mid-sized city in Florida, USA: a retrospective study — Andrew L. Rainey, Lisa E. Emerson, Terri Tran et al. — Applied and Environmental Microbiology — doi:10.1128/aem.01540-26
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.