This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Calabar swelling is produced by? \nSelect and explain. \nA. Onchocerca volvulus, B. Loa loa, C. Burgia malayi, D. Wuchereria bancrofti', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Loa - Loa Loiasis . Loiasis is caused by L. Loa (the African eye worm) . Habitat of adult worms is subcutaneous connective tissue of man; often in the sub-conjuctival tissue of the eye. . The worm passes its life cycle in two hosts : - Man - Chrysops (Mango or deer flies) . C/Fs --> Asymptomatic microfilaremia Calabar (fugitive) swelling - subcutaneous swelling Nephropathy Encephalopathy rare Cardiomyopathy Calabar swelling is due to hypersensitivity reaction to the adult worm.", 'role': 'assistant'}]