A cross-sectional study on fecal shedding of Salmonella among cow-calf herds in the southeastern United States

Cross-sectional surveys are important in identifying emerging and re-emerging pathogens. Although cattle are notable reservoirs of Salmonella, few studies have reported the isolation of the emerging atypical H2S-negative strain of the pathogen from bovine sources. These atypical strains can cause disease outbreaks yet easily elude detection. This study investigates the antimicrobial resistance profiles and epidemiology of Salmonella among cow-calf herds in Alabama, U.S., while attempting to isolate its emerging H2S-negative variant.