Non-O157 STEC Testing at
AHFSL
Because of the
public health concern regarding the
non-O157 Shiga Toxin-producing
Escherichia coli (STEC) serogroups,
FSIS has declared six additional E.
coli strains (O26, O45, O103, O111,
O121, and O145) as adulterants in
food (http://www.fsis.usda.gov/OPPDE/rdad/FRPubs/2010-0023.pdf
). This regulation places these
non-O157 STEC strains in the same
regulatory category as the
much-feared E. coli O157:H7.
Declaring a substance to be
anadulterant means that it cannot
legally be distributed in food, and
therefore food processors can
legally be held accountable for
products that contain it.
Starting on June 4, 2012, beef
manufacturing trimmings are required
to be tested for these bacteria. At
this time, the rule applies only to
raw ground beef and in the scraps or
“trim” that are collected in
processing plants, under the MT60,
M52, and MT53 sampling programs, to
be made into ground beef. The rule
does not apply to components of
ground beef, such as cheek meat,
head meat, or other components
described in FSIS Directive
10,010.1.
The Avian Health and Food Safety
laboratory now offers a Real-Time
STEC assay for the rapid screening
of the virulence genes present in
STEC serotypes. Furthermore, if a
positive sample is detected, we will
analyze for the presence or absence
of the O group. Contact the lab at
253-445-4537 or email
WADDLAHL@vetmed.wsu.edu for a
quote. |