Which of the following correctly defines the Annual Parasite Incidence (API) used for malaria stratification under the National Framework for Malaria Elimination?

• A Positive slides per 100 blood smears examined per year
• B Confirmed malaria cases per 100 population screened per year
• C Confirmed malaria cases per 1000 population per year ✓
• D Malaria deaths per 1000 confirmed cases per year

Explanation

API equals the number of confirmed malaria cases in a year multiplied by 1000 and divided by the total population under surveillance, giving confirmed cases per 1000 population per year. Option A describes the Slide Positivity Rate (SPR) and option B resembles the Annual Blood Examination Rate denominator structure but with the wrong numerator. API below 1 defines the pre-elimination phase threshold used for district classification.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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