2024 No https://doi.org/10.1111/zph.13161 Thomas, Christine M. North America Observational Epidemiology Study Students Staff Elementary (K-5) Bacteria Other Agritourism Fair Haemolytic uraemic syndrome Petting zoo This epidemiological investigation identified an STEC O157:H7 outbreak linked to Tennessee school field trips, with 9 confirmed and 55 probable cases. Lab testing confirmed the source, underscoring the need for farm safety and zoonotic infection prevention.