Multiple choice

Infection by which of the following parasites leads to blindness?

  1. Loa-Loa

  2. Onchocerca volvulus

  3. Thelazia callipaeda

  4. Baylisascaris procyonis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Onchocerca volvulus infection leads to blindness. It is the main cause of river blindness in Africa and is transmitted by the black fly. It forms nodules in the head.

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