This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
River blindness is caused by 
Select and explain. 
A. Onchocerca, B. Loa loa, C. Ascaris, D. Brugia malayi
A: Onchocerca
Answer: A: Onchocerca 
Explanation: Onchocerciasis is also known as River blindness and Robles disease. REF : paniker book of parasitology 8th Ed.