Social & Preventive Medicine ‘Prepatent period’ in lymphatic filariasis is defined as the time interval between inoculation of infective larvae and – A Blockage of lymphatics B First appearance of detectable microfilaria C Development oflymphoedema D Development of adult worm 💡 Explanation 'Prepatent period' in lymphatic filariasis is defined as the time interval between inoculation of infective larvae and - ✓ Correct Answer: B. First appearance of detectable microfilaria