The National Vector Borne Disease Control Programme (NVBDCP) classifies districts for malaria intervention intensity based on the Annual Parasite Index (API). A district is categorized as a 'high-burden' district requiring intensified response when API is:
- A ≥ 5 per 1000 population
- B ≥ 2 per 1000 population ✓
- C ≥ 1 per 1000 population
- D ≥ 10 per 1000 population
Explanation
Under NVBDCP's stratification, districts with API ≥ 2 per 1000 population are considered high-burden and receive intensified vector control, IRS, and targeted treatment interventions. API = (Number of positive blood slides in a year / Population under surveillance) × 1000. Districts with API < 1 are low-burden, and API 1–2 are moderate. India's National Framework for Malaria Elimination (NFME) 2016–2030 aims for API < 1 in all districts by 2024 and zero indigenous cases by 2030.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
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