A 20-year-old male presented to the OPD with high-grade fever, groin pain and a swollen scrotum for 1 week and are worsening progressively. On examination, Tender inguinal lymphadenopathy Scrotal swelling with hydrocoele Lymphatic streaking Blood samples are taken and a parasite infection is suspected. The above disease is transmitted by which of the following vectors: -

This is a case of filariasis (acute lymphadenitis) due to Wuchereria bancrofti. Microfilariae are found in blood, hydrocoele and other body fluids. Most commonly spread by the Culex mosquito. Signs and symptoms Fever Inguinal or axillary lymphadenopathy Testicular and/or inguinal pain Skin exfoliation Limb or genital swelling - Repeated episodes of inflammation and lymphedema lead to lymphatic damage, chronic swelling, and elephantiasis of the legs, arms, scrotum, vulva, and breasts Image A - Anopheles mosquito Image B - Culex mosquito Image C - Aedes mosquito Image D - Rat flea