TABLE 5.

Escherichia coli isolates included in this study

Beef plants ID	Isolation source	Process	Processing stages	No. of isolates for acid resistance analysis	No. of genomes for genomic analysis	Reference
B	Hide-on carcasses	Hide wash	Before	100	27	13
	Hide-off carcasses		After	100	30
A	Dressed carcasses	Carcass chilling	Before	100	33	16, 59
			During 4 to 24 h	100	31
A	Fabrication equipment surfaces	Equipment sanitation	Before	100	24	12
			After	100	19
A	Beef cuts and trim			100	14	60