June 7, 2011
Researchers at Cambridge University say they have found a new strain of methicillin-resistant Staphylococcus aureus (MRSA) in milk from England, Scotland and Denmark, which they are calling LGA251.
The findings – published online by The Lancet Infectious Diseases – can be seen as a further signal that the routine use of antibiotics in industrial food animal production is producing novel public health risks, and diminishing the effectiveness of antibiotics in human medicine.
Center for a Livable Future Director Robert Lawrence said the new findings “underscore the urgent need to protect the effectiveness of a critical medical and public health resource – and this unambiguously translates to the obvious step of eliminating the irresponsible administration of antibiotics to food animals.”
In December, the U.S. Food and Drug Administration confirmed that 80% of the antibiotics used in the United States are used in food animals.
The authors of the Lancet study stressed that current testing protocols would fail to identify this new strain as MRSA, and that “new diagnostic guidelines for the detection of MRSA should consider the inclusion of tests for [LGA251].”