Sarah Rumple Mahan
Editor-In-Chief
Sarah Rumple Mahan is an award-winning veterinary writer and editor living in Denver, Colorado. Sarah has written for Today’s Veterinary Business since 2018, and she became the publication’s editor-in-chief in 2026. Reach her at smahan@navc.com.

The American Veterinary Medical Association has released a comprehensive update to its clinical report, “Antimicrobial Stewardship and Pathogens Affecting Animal Health,” providing veterinary teams with current data to support prescribing decisions.
The 200-plus-page resource expands on the original 2020 report with updated scientific literature and new practical tools for the clinic. Key additions include:
- Fungal pathogens: The first-time inclusion of select fungi, such as dermatophytes causing ringworm in dogs and cats, reflecting emerging drug-resistance concerns.
- Clinical application: Expanded discussions on diagnostic and treatment considerations, including guidance on interpreting susceptibility testing and laboratory results.
- Species-specific resources: Printable pathogen “report cards” and summaries detailing prevention steps and resistance profiles for companion animals, cattle, chickens and turkeys, equids, fish, sheep and goats, and pigs.
“Veterinarians see firsthand how antimicrobial resistance can limit treatment options for the animals in our care, and every decision we make about using these medicines matters,” said Dr. Jen Quammen, AVMA president. “This updated report gives the entire veterinary team practical, species-specific information they can put to work every day, from preventing infections and interpreting lab results to making informed treatment decisions grounded in scientific evidence and clinical judgment. Preserving the effectiveness of these drugs is essential to protecting the health of animals, people, and our shared environment.”
