Staph seen in nearly half of U.S. meat

CNN.com April 15th, 2011

10:00 AM ET

Staph seen in nearly half of U.S. meat

Almost half of the meat and poultry sold at U.S. supermarkets and grocery stores contains a type of bacteria that is potentially harmful to humans, a new study estimates.

Researchers tested 136 packages of chicken, turkey, pork, and ground beef purchased at 26 grocery stores in five cities around the country, and found that 47 percent contained Staphylococcus aureus (S. aureus), a common cause of infection in people.

What's more, roughly half of the contaminated samples contained strains of the bacteria that were resistant to at least three antibiotics, such as penicillin and tetracycline. Some strains were resistant to a half dozen or more.