Point shource epidemic is -: (A) Short term fluctuation, (B) Periodic fluctuation, (C) Long term fluctuation, (D) Secular trend
Answer is A. Ans. is 'a' i.e., Short term fluctuation * Point source (single exposure) epidemic is 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.