Multiple choice

Which of the following types of organisms causes brain fever?

  1. Bacteria

  2. Virus

  3. Protozoa

  4. Fungi

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

Brain fever (Japanese encephalitis) is caused by a flavivirus transmitted by mosquitoes, not by bacteria, protozoa, or fungi. The virus directly infects and inflames brain tissue, causing the characteristic symptoms of encephalitis.