In swine and poultry slaughter operations, which organisms or indicators are tested?

• A. Listeria monocytogenes
• B. Staphylococcus aureus
• C. Salmonella, Campylobacter, APC, total coliform, Esterobacteriaceae, and E. coli Biotype I
• D. Vibrio vulnificus

Answer: (C)

In slaughter operations, surveillance focuses on both key pathogens of concern and general hygiene indicators to judge how well sanitation and HACCP controls are working. The best choice includes Salmonella and Campylobacter because they are the primary pathogens monitored in swine and poultry processing to protect public health. It also includes several microbial indicators—APC (a measure of overall aerobic bacterial load), total coliforms, Enterobacteriaceae, and E. coli biotype I—to assess process hygiene and potential fecal contamination. Together, these organisms and indicators provide a comprehensive picture of both specific risk and overall sanitary condition.

Vibrio vulnificus is associated mainly with seafood, not swine or poultry; Listeria monocytogenes and Staphylococcus aureus are not the standard combined set for routine slaughter operation testing in this context.