This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
A healthy center repos 40 to 50 cases in a week in the community. This week there are 48 cases normally. This is called: 
Select and explain. 
A. Epidemic, B. Sporadic, C. Endemic, D. Outbreak
C: Endemic
Answer: C: Endemic 
Explanation: Ans. C. EndemicRef: Park's Text book Preventive & Social Medicine 24th edn; Page no. 98 EndemicConstant presence of a disease or infectious agent in a defined geographical area.It is the usual or expected frequency of a disease in a population.