title: Prior exposure to antimicrobials affects pathogen isolation, resistance to antimicrobials, and resistance patterns.
authors.forename: S Wayne
authors.initials: SW
authors.lastname: Martin
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002417:Cattle; D015169:Colony Count, Microbial / Q000662:veterinary; D024881:Drug Resistance, Bacterial; D024901:Drug Resistance, Multiple, Bacterial; D004784:Environmental Monitoring; D008826:Microbial Sensitivity Tests; D011159:Population Surveillance; D011200:Poultry; D012475:Salmonella / Q000187:drug effects* / Q000302:isolation & purification; D012481:Salmonella Infections, Animal / Q000382:microbiology*
chemical_list: D000900:Anti-Bacterial Agents