Which term describes serology-based monitoring under animal disease eradication programs?

• A. Serosurveillance
• B. Passive Surveillance
• C. Active Surveillance
• D. Wastewater Surveillance

Answer: (A)

Serosurveillance is serology-based monitoring under animal disease eradication programs. It uses blood samples to measure antibodies against the pathogen across a population, giving a snapshot of who has been exposed or is immune. This helps identify areas where transmission may still occur and provides a way to track progress toward disease freedom. It differs from passive surveillance, which relies on reports of disease symptoms, and from active surveillance, which involves proactive, systematic data collection that isn’t limited to serology. Wastewater surveillance relies on environmental samples rather than individual animals. In vaccination contexts, serosurveillance may also use tests that distinguish vaccine-induced antibodies from those due to infection.