<prompt> In a community with one lakh population , 20,000 slides were examined in a paicular year. Out of these, 100 were positive for malarial parasite. What is the Annual Parasite Incidence API in this community ?5210.5  <response>: Annual parasite incidenceAPI Confirmed cases during one yearpopulation under surveillance1000. Here,API1001000001000 1. Reference:Park;s textbook of preventive and social medicine,K.Park,23rd edition,page no:261. p 