The United States Department of Agriculture's Food Safety and Inspecti
on Service has initiated the National Microbiological Baseline Data Co
llection Programs to determine the prevalence and levels of selected b
acteria on meat and poultry slaughtered under federal inspection. This
paper reviews the methodology and results of the first completed stud
y on samples collected from steer and heifer carcasses. Potential appl
ications for this type of testing are discussed.