TABLE 1.

Numbers and sources of E. coli isolates used in this study

SourceTotal no. of isolatesNo. of isolates (northern, central, southern)Sample type(s)
Human8421, 48, 15Septic tanks, fecal samples
Beef8533, 22, 30Lagoon, compost pit
Dairy8224, 35, 23Lagoon
Swine8026, 26, 28Lagoon
Poultry7021, 30, 19Lagoon