Alimentary Bacteriology Practice Test

Campylobacter is a fastidious, microaerophilic organism, so recovering it from stool relies on creating an atmosphere with reduced oxygen and using media that specifically select for Campylobacter. Plating stool on specialized Campylobacter media (such as Campy–type agar) and incubating under microaerophilic conditions suppresses competing flora and promotes Campylobacter growth, making detection more reliable. While incubation around 42°C is often used to favor thermotolerant strains like C. jejuni and C. coli, the essential idea is the combination of a microaerophilic environment with selective Campylobacter media. Non-selective aerobic media would allow other bacteria to overgrow; anaerobic conditions with chocolate agar aren’t ideal for Campylobacter, and 60°C is outside its growth range.