For Campylobacter, Category 1 is defined as?

• A. No performance standard achieved
• B. Consistent process control (achieved 50 percent or less of the performance standard during the most recently completed 52 week moving window)
• C. Highly variable process control
• D. Variable process control

Answer: (B)

Category 1 is about consistent process control. In this framework you look at Campylobacter performance over a rolling 52-week window. If the facility achieves 50 percent or less of the performance standard during that most recently completed year, it shows stable, predictable results and the process is considered consistently controlled. This reflects reliability and low variability in performance.

If the window showed frequent exceedances, wide swings, or no standard being met, it would indicate more variable or highly variable process control, or a failure to meet any standard, which are not Category 1 conditions.