Frozen ground beef linked to an E. coli outbreak at a Rockbridge County Boy Scout camp was voluntarily recalled Thursday.

California-based S&S Foods LLC has recalled about 153,630 pounds of frozen ground beef products because the meat may be contaminated with E. coli O157:H7, the U.S. Department of Agriculture's Food Safety and Inspection Service said in a news release.

The recall comes on the heels of a Virginia Department of Health discovery that 11 of the Scouts with confirmed cases of E. coli were genetically tied to tainted beef found at the camp. That beef was from S&S Foods.

"We were able to determine that 11 are linked to the beef recall that was announced today by the [U.S.] Department of Agriculture," said Bobby Parker, a spokesman for the health department.

Earlier this week, state health investigators had linked the strain of E. coli found in stool samples of the children to a package of beef at the camp but were unsure if a recall was warranted because the contamination could have happened at the camp.

About 84 campers have reported illness after attending the Goshen Scout Reservation the week of July 20, according to the latest report from the health department.

Of those, 25 cases of E. coli have been confirmed through testing and eight campers have been hospitalized.

E. coli is a bacterium that can cause bloody diarrhea, dehydration and, in the most severe cases, kidney failure.

So far, the only illnesses associated with the recall have been from the Goshen camp, said Laura Riser, spokeswoman with the Food Safety and Inspection Service.

The 30-pound boxes of recalled frozen meat are sold only for food service and institutional use and are not for direct retail purchase. The meat involved in the recall was shipped to distribution centers in Allentown, Pa., and Milwaukee, according to the inspection service.

Locations where the recalled beef was sent is proprietary information, Riser said.

A message seeking comment from S&S Foods was not returned.

Because only some of the confirmed E. coli cases have been linked to the frozen beef, Virginia health officials are still conducting investigations to see if there is another cause of the outbreak, Parker said.

"The work is still under way on site," he said, adding that new water testing has been conducted and interviews are being done with food handlers.

The Goshen camps are primarily used by Boy Scout troops from the National Capital Area Council, based in Maryland. Southwest Virginia troops typically visit camps in Pulaski County.