This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
Sentinel surveillance of HIV is done all except - 
Select and explain. 
A. Disease trend, B. High risk group, C. Monitor effectiveness of control program, D. Population at risk
C: Monitor effectiveness of control program
Answer: C: Monitor effectiveness of control program 
Explanation: <p> HIV sentinel surveillance is used to calculate -high risk population. -prevalence of HIV. -trend finding among population. Reference:Park&;s textbook of preventive and social medicine,K.Park,22nd edition,page no:318,322. <\p>