In a town with population of 100,000 the number of slides examined is 5000. Out of these, 100 slides were postive for malaria. The API is?
High-Yield Explanation
Annual parasite incodence = Confirmed cases during 1 year / population under surveillance x 1000 ie 100/ 100000 x 1000 = 1% Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 278