system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Continues scrutiny of factors that affect the occurence of a disease is -
assistant
The correct answer is  Surveillance has been defined as the continuous scrutiny of all aspects of occurrence and the spread of diseases that are peinent to effective control. Surveillance goes beyond the passive repoing of cases Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 138