Which combination accurately reflects the reported prevalences?

• A. Campylobacter jejuni in poultry 100%; Campylobacter coli in swine >99%
• B. Campylobacter jejuni in poultry 50%; Campylobacter coli in swine 50%
• C. Campylobacter jejuni in poultry 0%; Campylobacter coli in swine 0%
• D. Campylobacter jejuni in poultry 75%; Campylobacter coli in swine 25%

Answer: (A)

High prevalence of Campylobacter in livestock is species-specific: Campylobacter jejuni is the dominant species in poultry, while Campylobacter coli is most common in swine, and both tend to be found in nearly all animals in typical production settings. Therefore, the combination that matches reported data shows poultry carrying C. jejuni essentially in every sampled bird (about 100%), and swine carrying C. coli in virtually all animals (greater than 99%). This pattern reflects how these bacteria colonize the gut of these animals in production environments.

Other options suggest much lower or partial prevalence (0% or 50%), which does not align with surveillance data showing near-universal colonization in these hosts.