One Health surveillance · NARMS
The National Antimicrobial Resistance Monitoring System links evidence from people, food animals and retail meats. Those components create a One Health view, but their samples, collection methods and denominators must remain distinct.
What NARMS reports
CDC says NARMS reports and interactive dashboards summarize antimicrobial resistance among enteric bacteria. The displays describe the number and type of isolates collected, associated resistance and trends. Human data include several foodborne bacteria, while integrated dashboards consolidate information generated from human, animal and retail-meat components.
This integrated design helps investigators ask whether related patterns appear across the food system. It does not turn unlike samples into one population. A human clinical isolate, an animal sample and a retail-food isolate reach surveillance through different pathways.
Three denominators that should never be blurred
- People: isolates associated with human illness and the surveillance population specified by the human dataset.
- Animals: samples from named animal species, production stages or slaughter surveillance.
- Retail food: samples from specified meat commodities, locations and collection periods.
A resistance percentage in one component cannot be subtracted directly from another unless the official analysis defines that comparison. Differences may reflect sampling, organisms, serotypes, drugs tested, laboratory methods or time coverage.
The value of integration is the ability to examine connected systems while preserving how each stream was measured. Combining totals without those boundaries creates a number that no source actually reports.
A source card for a NARMS claim
- Name the organism, serotype and antimicrobial or resistance definition.
- Identify the human, animal or retail-food component.
- Record years, geography, sample count and denominator.
- Note interim versus final status and the dashboard retrieval date.
- Describe association or surveillance pattern without assigning causation.
What the data cannot decide
NARMS is a public-health surveillance system, not an individual diagnostic or treatment tool. A dashboard pattern cannot tell a patient which antimicrobial is appropriate. Diagnosis, susceptibility results and treatment decisions belong with qualified clinicians and laboratories.