Endemic disease is defined as -: (A) Disease occuring regularly in expected frequency, (B) Disease occuring irregularly, (C) Disease occuring in excess of expected freqency, (D) Disease affecting a large population
Answer is A. Ans. is 'a' i.e., Disease occuring 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.