Epidemic is -: (A) Short term fluctuation, (B) Log term fluctuation, (C) Secular trend, (D) All of the above
Answer is A. Ans. is 'a' i.e., Short term fluctuation * There are three kinds of time trends or fluctuations in disease occurenceA. Short term fluctuations - epidemics.B. Secular trends or long term fluctuations.C. Periodic fluctuation.