<prompt> Incidence is defind as-Number of new cases occurring in a defined populationTotal cases new old occurring in a defined populationNumber of exposed developing the disease in a defined populationNone of the above  <response>: Incidence is defined as the number of new cases occurring in a defined population during a specified period of time. It can also refer to a new spell or episodes of disease arising in a given period of time per 1000 population. Ref: 25th edition, Parks Textbook of Preventive and Social Medicine, Page no. 68 