Which of the following is NOT among the four major bacteria under NARMS surveillance?

• A. Listeria monocytogenes
• B. Salmonella
• C. Campylobacter
• D. Escherichia coli

Answer: (A)

NARMS focuses on monitoring antibiotic resistance in four major enteric bacteria that are common causes of foodborne illness: Salmonella, Campylobacter, Escherichia coli, and Shigella. Listeria monocytogenes, while an important foodborne pathogen with distinct disease patterns, is not part of this core four and is instead tracked through separate listeriosis surveillance. Because of that, Listeria monocytogenes is not among the four major bacteria under NARMS surveillance.