No Change in Risk for Antibiotic-Resistant Salmonellosis from Beef, United States, 2002-2010.
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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. Neither outcome showed sustained change except for increases in 2003 and 2009 (>98% confidence) when larger or more outbreaks occurred. Switching all beef production to a raised-without-antibiotics system may not have a significant effect on antibiotic-resistant nontyphoidal salmonellosis (94.3% confidence).
author list (cited authors)
Costard, S., Pouzou, J. G., Belk, K. E., Morley, P. S., Schmidt, J. W., Wheeler, T. L., Arthur, T. M., & Zagmutt, F. J.
complete list of authors
Costard, Solenne||Pouzou, Jane G||Belk, Keith E||Morley, Paul S||Schmidt, John W||Wheeler, Tommy L||Arthur, Terrance M||Zagmutt, Francisco J