Zoetis Reported Low Pathogen Resistance in 2025
New surveillance data showed high antibiotic susceptibility in swine respiratory disease pathogens.
Updated on Oct. 1, 2026 in Diseases — General
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Zoetis reported that 2025 surveillance data indicated very low antimicrobial resistance among common swine respiratory pathogens. The study evaluated bacterial isolates to help veterinarians ensure the effective and judicious use of antibiotics.
Why it matters
Regular monitoring of resistance levels allows veterinarians to select the most effective treatments for specific respiratory diseases in swine. This process supports the broader goal of responsible antimicrobial use in the livestock industry.
Isolates of A. pleuropneumoniae showed 95% to 99% susceptibility to ampicillin and tilmicosin. Zoetis processes 800 to 1,000 bacterial isolates annually through its surveillance program.
The players
Zoetis
Zoetis is a global animal health company that provides medicines, vaccines, and diagnostic products for livestock and companion animals.
The details
Zoetis uses Maldi-Tof mass spectrometry to identify bacterial species and determines susceptibility by measuring the minimum inhibitory concentration against CLSI-endorsed breakpoints. Pathogens such as A. pleuropneumoniae, P. multocida, and B. bronchiseptica were tested against a wide range of common industry antibiotics.
Timeline
1998: Zoetis launched its antimicrobial resistance surveillance program.
2025: The most recent data collection period for the surveillance report.
The Big Picture
The study follows the data collection patterns established by the Zoetis antimicrobial resistance surveillance program. The 2025 results follow the established reporting patterns of this long-running surveillance initiative.
This data helps veterinarians adjust their treatment protocols to ensure the continued efficacy of essential veterinary medicines. By tracking these trends, professionals can maintain effective health management for swine populations worldwide.
The takeaway
Maintaining surveillance over 28 years allows for more precise antibiotic selection in livestock management. Producers and veterinarians should continue to prioritize diagnostic testing to combat resistance trends like those seen with tetracycline.
Further reading
Learn more about ongoing research in Diseases — General.
Source note: This article includes information reported by ThePigSite.
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