A district reports a 'Malarial Epidemic'. Under NVBDCP, an epidemic is declared when which criterion is met?
- A Any case of Plasmodium falciparum detected in a non-endemic district
- B More than 10 cases of malaria reported in a week
- C The observed slide positivity rate (SPR) exceeds twice the baseline SPR for that month based on 3 preceding years ✓
- D API exceeds 2 per 1000 population in the calendar year
Correct answer: C. The observed slide positivity rate (SPR) exceeds twice the baseline SPR for that month based on 3 preceding years
Explanation
Under NVBDCP, a malaria epidemic is operationally defined as the observed Slide Positivity Rate (SPR) or case count exceeding twice (200%) the average of the same reporting period over the previous 3 years. This threshold-based definition accounts for seasonal variation and local baseline transmission. Immediate response includes surge in active surveillance, IRS, and treatment.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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