date:May 14, 2012
sampling. Out of 46 total samples, 28 of which were domestic and 18 imported, four tested positive for residues in concentrations ranging from .16 to .58 ppm.
The question is whether these levels are significant.
The study cites a new paper out of FDA's Center for Veterinary Medicine that analyzed the 2010 findings. Researchers found that the lowest levels of penicillin and virginiamycin present in the samples didn't contribute to antibiotic resistance among Campyloacter or Enterococcus ba