Swine Respiratory Pathogens Remained Highly Susceptible
Data from 2025 indicates that common swine bacteria continue to respond well to several industry-standard antibiotics.
Updated on Oct. 1, 2026 in Diseases — General
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Recent surveillance data from 2025 shows that respiratory pathogens affecting swine maintain high levels of susceptibility to common antimicrobial treatments. This monitoring program provides essential guidance to veterinarians regarding effective antibiotic selection for livestock.
Why it matters
Consistent monitoring of bacterial resistance patterns is critical for the judicious and effective use of antibiotics in veterinary care. These data points help clinicians choose treatments that remain potent, ensuring both animal health and effective disease management.
A long-term surveillance program analyzed 800 to 1,000 bacterial isolates annually to determine minimum inhibitory concentrations against standard breakpoints. Results showed 100% susceptibility for primary pathogens like Actinobacillus pleuropneumoniae to several drugs, though tetracycline resistance remains higher.
The players
Zoetis
A global animal health company that develops vaccines, medicines, and diagnostic products for livestock and companion animals.
The details
The program utilizes Maldi-Tof mass spectrometry to precisely identify bacterial species from processed isolates. Once identified, researchers measure the minimum inhibitory concentration of various antibiotics, comparing these values against CLSI-endorsed benchmarks to establish clear susceptibility profiles for respiratory pathogens.
Timeline
1998 marked the initiation of the long-term antimicrobial resistance surveillance program.
2025 served as the data collection period for the most recent surveillance report.
Health Landscape
This reporting sits within the broader international effort to manage antimicrobial resistance by aligning diagnostic testing with the CLSI framework. It represents a long-standing commitment to evidence-based antibiotic stewardship in veterinary medicine.
While this report focuses on animal health, the judicious use of antibiotics it supports is a cornerstone of global public health efforts to prevent the spread of resistant bacteria. Discussions with your veterinarian regarding the rationale for specific antibiotic use remain the best way to understand how these findings apply to animal care.
The takeaway
The sustained susceptibility of common respiratory pathogens to several key antibiotics underscores the value of ongoing resistance monitoring. Stakeholders should continue to prioritize the use of diagnostic testing to verify that chosen therapies remain appropriate for specific bacterial strains.
Further reading
For more information on the evolution of pathogen monitoring, visit the Diseases — General section.
Source note: This article includes information reported by ThePigSite.
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