Costco has recalled frozen ground beef patties from stores in 24 states, including Utah, because they may be contaminated with E. coli bacteria.

Costco said Monday there had been one report of an illness, in New York state, from frozen ground beef patties produced in April at its central processing facility in Tracy, Calif.The U.S. Department of Agriculture said the woman who got sick might not have washed her hands after handling the uncooked meat. Seven other people who also ate the patties were fine.

The recall was aimed at two products.

One is Costco's frozen 1/3-pound Kirkland Signature Ground Sirloin and Loin of Beef Patties in 6-pound packages. The patties carry item number 18508 and can be identified by looking on the bottom of the plastic package bag and finding one of two production codes designated as follows: "xx:xx 04/06/98 MFG" or "xx:xx 04/07/

98 MFG" with "xx:xx" designating the time of day.

The other is frozen 1/4-pound Kirkland Signature Ground Beef Patties in 6-pound packages. They carry item number 18498 and are identified by a production code of "xx:xx 04/07/98 MFG," with "xx:xx" for the time of day.

Costco said its own tests and those of independent laboratories detected no contamination.

Costco said the patties could be returned for a full refund.

Consumers can call the Costco hot line at 1-800-727-8248.