TABLE 3.

Traceback investigation information, including reported illnesses, sub-cluster selected POS selection, and convergence level for three outbreaks of STEC infections linked to leafy greens from the Yuma growing region; the Santa Maria growing region; and the Salinas Valley growing region.

Epidemiologic &Traceback Information	Outbreak Season and Year
	Spring 2018 (Yuma growing region)	Fall 2018 (Santa Maria growing region)	Fall 2019 (Salinas Valley growing region)
Reported illnesses	240	62	172
Hospitalizations	104	23	88
HUS	28	2	16
Deaths	5	0	0
Total illness sub-clusters or single case exposures traced	23	6	15
Total Farms	12	17	16
Total Ranches	26	15	43