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Volume 21, Number 6—June 2015
Research

Dose-Response Relationship between Antimicrobial Drugs and Livestock-Associated MRSA in Pig Farming1

Alejandro Dorado-GarcíaComments to Author , Wietske Dohmen, Marian E.H. Bos, Koen M. Verstappen, Manon Houben, Jaap A. Wagenaar, and Dick J.J. Heederik
Author affiliations: Utrecht University, Utrecht, the Netherlands (A. Dorado-García, W. Dohmen, M.E.H. Bos, K.M. Verstappen, J.A. Wagenaar, D.J.J. Heederik); Wageningen UR, Lelystad, the Netherlands (J.A. Wagenaar); PorQ BV, Son, the Netherlands (M. Houben).

Main Article

Figure 3

Prevalence of LA-MRSA in humans (n = 158) during a study of the dose-response relationship between antimicrobial drug use and LA-MRSA on pig farms, the Netherlands, 2011–2013. Results are stratified by type of farm (A) and number of hours worked on the farm (B). Farms were defined as open when they received external supplies of gilts ≥1 time per year from at least 1 supplier and as closed when they received no external supply of gilts. Closed triangles indicate closed farrow-to-finish farms; clo

Figure 3. Prevalence of LA-MRSA in humans (n = 158) during a study of the dose-response relationship between antimicrobial drug use and LA-MRSA on pig farms, the Netherlands, 2011–2013. Results are stratified by type of farm (A) and number of hours worked on the farm (B). Farms were defined as open when they received external supplies of gilts ≥1 time per year from at least 1 supplier and as closed when they received no external supply of gilts. Closed triangles indicate closed farrow-to-finish farms; closed squares indicate closed farrowing farms; open triangles indicate open farrow-to-finish farms; open squares indicate open farrowing farms; open diamonds indicate persons working <20 hours per week; closed diamonds indicate persons working >20 hours per week. LA-MRSA, livestock-associated methicillin-resistant Staphylococcus aureus. Error bars indicate 95% Cis.

Main Article

1Preliminary results from this study were presented at the 3rd American Society for Microbiology–European Society of Clinical Microbiology and Infectious Diseases (ASM-ESCMID) Conference on Methicillin-resistant Staphylococci in Animals: Veterinary Public Health Implications, 2013 November 4–7, Copenhagen, Denmark (oral presentation, speaker abstract S7:3); and at the Society for Veterinary Epidemiology and Preventive Medicine annual meeting, 2014 March 26–28, Dublin, Ireland (poster presentation).

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