Multiple choice

Which of the following causes kala-azar?

  1. Mosquitoes

  2. Rat-flea

  3. Sand-fly

  4. Tsetse-fly

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Kala-azar (visceral leishmaniasis) is a disease caused by Leishmania parasites, which are transmitted to humans through the bite of an infected sand-fly.