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Research Spotlight - Summary:  Evaluation of the Impact of Antimicrobial Use Protocols in Porcine Reproductive and Respiratory Syndrome Virus-Infected Swine on Phenotypic Antimicrobial Resistance Patterns

Reprinted as posted on Swine in Minnesota blog, October 28, 2022. Adopted from Bob Morrision’s Swine Health Monitoring Project Friday rubric.

Researchers Carissa Odland, Roy Edler, Noelle Noyes, Scott Dee and Joel Nerum summarize the findings of a 149-day study on antimicrobial use during PRRS infections.

Key Points:Antimicrobial protocols of differing intensities of exposure were compared with a control group with minimal antimicrobial exposure and animals were followed for 149 days.
Fecal samples revealed most E. coli isolates were resistant to between one and 11 antimicrobials with 19 different observed resistance profiles, while most Enterococcus isolates were resistant to between two and nine antimicrobials and 27 resistance patterns were observed.
Few significant differences between groups or over time were observed.

Continue reading to learn how Antimicrobial resistance (AMR) may impact both animal health, through loss of antimicrobial efficacy to treat animal pathogens, and human health via transmission of resistant organisms from animals to people.
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