No Change in Risk for Antibiotic-Resistant Salmonellosis From Beef, United States, 2002–2010

Restricting antibiotic use in food production animals is a target for reducing antimicrobial drug–resistant infections in humans. We used US surveillance data to estimate the probability of antibiotic-resistant nontyphoidal salmonellosis per meal made with beef during 2002–2010. Applying data for nontyphoidal Salmonella in raised-without-antibiotics cattle, we tested the effect of removing antibiotic use from all beef cattle production. We found an average of 1.2 (95% credible interval 0.6–4.2) antibiotic-resistant nontyphoidal salmonellosis cases per 1 million beef meals made with beef initially contaminated with antibiotic-resistant nontyphoidal Salmonella at slaughter or retail and 0.031 (95% credible interval 0.00018–0.14) cases per 1 million meals irrespective of beef contamination status.