Endemic disease is defined as a disease-: (A) Occurance regularly in expected frequency, (B) Occurance irregularly from time to time, (C) Occurance in excess of expected frequency, (D) Occurance in large population
Answer is A. Ans. is 'a' i.e., Occurance regularly in expected frequency * Sporadic - Disease occuring irregularly from time to time.* Endemic - Disease occuring regularly in expected frequency.* Epidemic - Disease occuring in excess of expected frequency.* Pandemic - Epidemic affecting a large proportion of population over a wide geographic area.