This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
Continuous scrutiny of factors that determine the occurence and distribution of disease and other condition of ill health is the definition of: 
Select and explain. 
A. Monitoring, B. Surveillance, C. Disease control, D. System analysis
B: Surveillance
Answer: B: Surveillance 
Explanation: Diseases under International Surveillance : Louse borne typhus fever Relapsing fever Poliomyelitis Malaria Human influenza Rabies Salmonellosis Monitoring versus Surveillance Monitoring Surveillance Performance and analysis of routine measurements aimed at detecting changes in environment or health status One Time linear activity No feedback present No inbuilt action component present Stops once disease is eliminated/eradicated Smaller concept Continuous scrutiny of the factors that determine the occurence and distribution of disease and other condition of ill-health Continous cycle Feedback present Inbuilt action component Continues even after disease is eliminated/eradicated Broader concept Ref: Park 25th edition Pgno: 47