Question

Encephalitis in men is a viral disease and is transmitted by?
A) Anopheles
B) Culex
C) Aedes
D) Culex and Aedes

Answer 1

Hint: Encephalitis is caused by a flavivirus from the virus family Flaviviridae and its genetic material is single-stranded RNA, its symptoms include fever, headache, skin rash, swollen lymph nodes, body aches, and in severe stages sleepiness, stiff neck, coma, paralysis, inflammation of the brain.

Complete step-by-step answer:

Encephalitis is transmitted by the bite of a mosquito (Culex pipiens).
Aedes: Aedes aegypti mosquito transmits yellow fever from one human to another. Yellow fever is caused by a flavivirus from the family Flaviviridae having single-stranded RNA as genetic material. Its symptoms include fever, chills, headache, backache, nausea in the early stages, and lesion in the infected organ haemorrhaging in the severe stage.
Anopheles: Female anopheles mosquito transmits malaria. Malaria is a disease, man has been fighting for many years. Plasmodium, a tiny protozoan is responsible for the disease. Plasmodium enters the human body as sporozoites (infected form) through the bite of an infected female anopheles mosquito. The parasites initially multiply within the liver cells and attack red blood cells resulting in their rupture. The rupture of RBC is associated with the release of a toxic substance, hemozoin, which is responsible for chills and high fever.

Therefore the correct answer is Option B.

Note: Encephalitis is a rare yet serious disease that can be life-threatening. Primary encephalitis is when a virus directly infects the brain and spinal cord. Secondary encephalitis occurs when an infection starts elsewhere in the body and then travels to the brain.