Escherichia coli O157:H7
https://www.hopkinsmedicine.org/health/conditions-and-diseases/escherichia-coli-o157-h7
https://www.hopkinsmedicine.org/health/conditions-and-diseases/escherichia-coli-o157-h7
https://www.mayoclinic.org/diseases-conditions/e-coli/symptoms-causes/syc-20372058
https://www.health.state.mn.us/diseases/ecoli/ecoli.html
https://www.cdc.gov/healthywater/drinking/private/wells/disease/e_coli.html