A Type II AFP (Acute Flaccid Paralysis) case in a child under 15 years must have stool specimens collected within how many days of AFP onset for adequate poliovirus surveillance?
- A Within 3 days
- B Within 14 days ✓
- C Within 30 days
- D Within 60 days
Correct answer: B. Within 14 days
Explanation
WHO and NPSP (National Polio Surveillance Programme) guidelines require two stool specimens to be collected at least 24 hours apart and within 14 days of AFP onset for adequate poliovirus surveillance and classification. Specimens must be stored and transported at 2–8°C (cold chain). Specimens collected after 14 days have lower poliovirus detection rates.
Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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