Which Campylobacter species is most commonly associated with human illness as a major foodborne pathogen?

Which Campylobacter species is most commonly associated with human illness as a major foodborne pathogen?

• A. Campylobacter jejuni
• B. Campylobacter coli
• C. Helicobacter pylori
• D. Campylobacter fetus

Answer: (A)

The essential point is identifying which Campylobacter species most often causes human illness tied to food. Campylobacter jejuni is the leading cause of bacterial gastroenteritis in humans and is most strongly linked to foodborne transmission, commonly from undercooked poultry, unpasteurized milk, and contaminated water. It explains why this species is the top culprit among Campylobacter-related human infections. Other species can cause illness, but far less frequently: Campylobacter coli can cause similar symptoms but is less commonly isolated; Helicobacter pylori is associated with chronic stomach ulcers and gastritis rather than acute foodborne gastroenteritis; Campylobacter fetus tends to cause bacteremia or systemic infections, especially in vulnerable individuals, and is not the primary foodborne GI pathogen.

The essential point is identifying which Campylobacter species most often causes human illness tied to food. Campylobacter jejuni is the leading cause of bacterial gastroenteritis in humans and is most strongly linked to foodborne transmission, commonly from undercooked poultry, unpasteurized milk, and contaminated water. It explains why this species is the top culprit among Campylobacter-related human infections. Other species can cause illness, but far less frequently: Campylobacter coli can cause similar symptoms but is less commonly isolated; Helicobacter pylori is associated with chronic stomach ulcers and gastritis rather than acute foodborne gastroenteritis; Campylobacter fetus tends to cause bacteremia or systemic infections, especially in vulnerable individuals, and is not the primary foodborne GI pathogen.