Year-to-Date Totals: Testing of Raw Ground Beef Component (RGBC) Samples for E. coli O157:H7 and non-O157 Shiga toxin-producing E. coli (STEC)

Table 1 presents the results from analysis of raw ground beef component samples for non-O157 STECs. Results are from FSIS routine and follow-up sampling programs. Table 2 presents the results from analysis of raw ground beef component samples for both E. coli O157:H7 and for the non-O157 STECs by each non-O157 STEC serogroup. Information is based upon data in the FSIS electronic data system as of November 4, 2018.

Year-to-Date Totals

Results are posted according to the sample analysis completion date.

FSIS test results for the 6 target non-O157 STECs appear for only samples of beef manufacturing trimmings from cattle slaughtered on-site on or after June 4, 2012. At this time, only beef manufacturing trimmings and not components (such as bench trim, or other components of ground beef such as cheek meat and head meat) are eligible for testing for non-O157 STEC, as well as E. coli O157:H7.

The Number Positive column on this table includes all samples that were positive for non-O157 STEC overall and does not reflect the total number of individual positive serogroups listed in the Non-O157 STEC (by serogroup) and E. coli O157:H7 table . This is due to the possibility that one sample may be positive for multiple serogroups.

Table 1: 2018 Results from Analysis of Raw Ground Beef Component Samples for non-O157 STEC
Source	Number Analyzed	Number Positive	Percent Positive
Federal Plants	3,723	11	0.3
Trim Verification	3,173	8	0.25
Follow-up to Raw Ground Beef (RGB) Positive	28	0	0
Follow-up to RGBC Positive	457	3	0.66
Non-Routine Follow-up/Traceback	65	0	0
Imports	818	0	0

Results are posted according to the sample analysis completion date.

The Number Positive column on this table includes all samples that were positive for non-O157 STEC overall and does not reflect the total number of individual positive serogroups listed in the Non-O157 STEC (by serogroup) and E. coli O157:H7 table. This is due to the possibility that one sample may be positive for multiple serogroups.

Table 2: 2017 Results from Analysis of Raw Ground Beef Component Samples for non-O157 STEC
Source	Number Analyzed	Number Positive	Percent Positive
Federal Plants	3,666	20	0.55
Trim Verification	2,953	15	0.51
Follow-up to Raw Ground Beef (RGB) Positive	154	0	0
Follow-up to RGBC Positive	522	5	0.96
Non-Routine Follow-up/Traceback	37	0	0
Imports	1,580	5	0.32

Totals by Source and Serogroup

Raw Ground Beef Components (RGBC)²
Source³	Serotype	As of November 4, 2018
		Federal Plants				Import
		Trim Verification	Follow-up to RGB Positive at Supplier	Follow-up to RGBC Positive	Non-routine Follow-up/Traceback	Verification/ Follow-up
Beef	O157:H7	0.19% (6/3,203)	0.00% (0/29)	0.00% (0/475)	0.00% (0/65)	0.00% (0/860)
	Total non-O157 STECs	0.16% (5/3,139)	0.00% (0/28)	0.67% (3/446)	0.00% (0/65)	0.00% (0/818)
	O26	0	0	0	0	0
	O45	0	0	1	0	0
	O103	4	0	2	0	0
	O111	0	0	0	0	0
	O121	1	0	0	0	0
	O145	0	0	0	0	0

Veal	O157:H7	0.00% (0/35)	0.00% (0/0)	0.00% (0/13)	0.00% (0/0)	0.00% (0/0)
	Total non-O157 STECs	8.82% (3/34)	0.00% (0/0)	0.00% (0/11)	0.00% (0/0)	0.00% (0/0)
	O26	1	0	0	0	0
	O45	0	0	0	0	0
	O103	1	0	0	0	0
	O111	1	0	0	0	0
	O121	0	0	0	0	0
	O145	0	0	0	0	0

Mixed⁶	O157:H7	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)
	Total non-O157 STECs	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)
	O26	0	0	0	0	0
	O45	0	0	0	0	0
	O103	0	0	0	0	0
	O111	0	0	0	0	0
	O121	0	0	0	0	0
	O145	0	0	0	0	0

Unknown⁷	O157:H7	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)
	Total non-O157 STECs	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)	0.00% (0/0)
	O26	0	0	0	0	0
	O45	0	0	0	0	0
	O103	0	0	0	0	0
	O111	0	0	0	0	0
	O121	0	0	0	0	0
	O145	0	0	0	0	0

Total	O157:H7	0.19% (6/3,238)	0.00% (0/29)	0.00% (0/488)	0.00% (0/65)	0.00% (0/860)
	Total non-O157 STECs	0.25% (8/3,173)	0.00% (0/28)	0.66% (3/457)	0.00% (0/65)	0.00% (0/818)
	O26	1	0	0	0	0
	O45	0	0	1	0	0
	O103	5	0	2	0	0
	O111	1	0	0	0	0
	O121	1	0	0	0	0
	O145	0	0	0	0	0

¹Results are posted according to the sample analysis completion date.

²FSIS test results for the 6 target non-O157 STECs appear for only samples of beef manufacturing trimmings from cattle slaughtered on-site on or after June 4, 2012. At this time, only beef manufacturing trimmings and not components (such as bench trim, or other components of ground beef such as cheek meat and head meat) are eligible for testing for non-O157 STEC, as well as E. coli O157:H7.

³FSIS uses product labeling for the purpose of identifying whether the sample source is beef or veal.

⁴Percent Positive

⁵(Number positive/number analyzed). Positives and Percent Positives on this table include all serogroups tested and do not reflect the total number of individual positive samples on the Individual Positives and the non-O157 STEC YTD tables. This is due to the possibility that one sample may be positive for multiple serogroups.

⁶Mixed source is composed of both beef and veal products.

⁷Inspector did not answer the question on the sampling form.