The National Vector Borne Disease Control Programme (NVBDCP) uses a stratification system for malaria-endemic areas. Which stratification correctly identifies a High Transmission Area (HTA) for malaria?
- A Annual Parasite Incidence (API) ≥ 2 per 1000 population ✓
- B Slide Positivity Rate (SPR) > 5%
- C Annual Blood Examination Rate (ABER) > 10%
- D Pf proportion (Pfpr) > 40%
Correct answer: A. Annual Parasite Incidence (API) ≥ 2 per 1000 population
Explanation
Under NVBDCP, areas are stratified based on Annual Parasite Incidence (API): API ≥ 2/1000 = High Transmission Area (HTA); API 1–2 = Medium Transmission; API < 1 = Low Transmission. ABER (Annual Blood Examination Rate) is a measure of surveillance effort (target > 10%), not disease burden. SPR (Slide Positivity Rate) gives the proportion of examined slides that are positive. Pfpr is used in global malaria stratification but not the primary NVBDCP metric for HTA designation.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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