Over 10% of raw poultry packaging is contaminated with campylobacter, a Scottish study on poultry contamination has found. The presence of campylobacter in raw poulty has been reported previously in the U.S. as well.
In fact, Bill Marler and Marler Clark funded a study of retail poultry in Seattle, Washington in April, 2011. In that study, campylobacter was found at the much higher rate of 65%. Other findings included:
19 % of the samples tested positive for Salmonella, one chicken tested positive for Listeria, and 10 % showed the presence of the methicillin-resistant S. aureus (MRSA). In addition, , one of the chicken samples tested positive for E. coli 026, Shiga-toxin producing E. coli (STEC) bacteria.
You can view the actual test results in this spreadsheet.