On this page: About the National Data | Methodology | History
About the National Data
Data
Data Sources: National Antimicrobial Resistance Monitoring System for Enteric Bacteria (NARMS), CDC/NCEZID; Foodborne Diseases Active Surveillance Network (FoodNet), CDC/NCEZID
Baseline: 2.0 percent of domestically-acquired Campylobacter jejuni infections in humans were resistant to macrolides in 2016-18
Target: 2.0 percent
Methodology
Methodology notes
Public health laboratories in 10 FoodNet sites forward a frequency-based sample of Campylobacter isolates that they receive from participating clinical/reference laboratories to NARMS at CDC. CDC scientists test isolates for susceptibility to macrolides and other drug classes using a broth microdilution method and interpret results using criteria from the Clinical and Laboratory Standards Institute (CLSI) when available. Domestically-acquired infections (i.e., no international travel in the 7 days before illness onset) will be identified using travel information available from FoodNet.
History
In 2023, the baseline and target were changed from 2.5 in 2014-2016 to 2.0 in 2016-2018 to align the baseline year range with the other Food Safety Topic Area objectives.