"Incidence" is defind as-
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, Park's Textbook of Preventive and Social Medicine, Page no. 68
Number of new cases occurring in a defined population
Total cases (new + old) occurring in a defined population
Number of exposed developing the disease in a defined population
None of the above
Epidemiology