Eighty-three percent of chicken sold in U.S. grocery stores may contain bacteria that cause foodborne illnesses. The USDA denies the report from Consumer Reports, saying their sample size was too small. Consumer Reports also said the rate of bacteria contamination was "34 percentage points higher than the rate it found three years ago." I'm not sure who's "right" on this one, but if Consumer Reports used the same methodology as they did last time, and still found at 34% increase, it seems like there might be more bacteria on the meat.
Update: Here's a more detailed article on the Consumer Reports site. Thanks Rory!