A district reports 20 cases of Japanese Encephalitis in August–September. The primary vector mosquito responsible for JE transmission in India is:

• A Aedes aegypti (container-breeding, domestic)
• B Culex tritaeniorhynchus (paddy field-breeding, agricultural areas) ✓
• C Anopheles stephensi (urban malaria vector)
• D Mansonia uniformis (swamp-breeding, filariasis vector)

Explanation

Culex tritaeniorhynchus is the principal vector of Japanese Encephalitis (JEV) in India, breeding in paddy fields and stagnant agricultural water. The pig is the amplifying host; ardeid birds (herons, egrets) are reservoir hosts. JE transmission peaks post-monsoon (August–October) in rice-growing states. JE vaccine (SA 14-14-2 live attenuated) is included in the NIS for endemic districts.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.