The viral hemorrhagic disease caused by virus and transmitted by infected mosquito bite is

Correct option is C

Ans. (c) Yellow fever
Explanation:
Yellow fever is a viral hemorrhagic disease caused by the Yellow fever virus (Flavivirus genus) and is transmitted by the bite of infected Aedes aegypti mosquitoes.
Key Features of Yellow Fever:
· Causative Agent: Yellow fever virus (Flavivirus family)
· Vector: Aedes aegypti mosquito
· Symptoms:
· High fever
· Jaundice (yellowing of skin and eyes) → Hence the name "Yellow Fever"
· Hemorrhagic symptoms (bleeding from gums, nose, gastrointestinal tract)
· Multi-organ failure in severe cases
· Endemic Regions:
· Tropical areas of Africa and South America
· Prevention:
· Yellow fever vaccine (Live-attenuated 17D strain)
· Mosquito control measures
Why are the other options incorrect?
1. Plague → (Incorrect Choice)
· Plague is a bacterial disease caused by Yersinia pestis and transmitted by fleas, not mosquitoes.
· It does not cause viral hemorrhagic fever.
2. Typhus → (Incorrect Choice)
· Typhus is caused by Rickettsia bacteria, transmitted by lice or fleas, not mosquitoes.
· Symptoms include fever, rash, and body pain but no viral hemorrhagic fever.
3. Filariasis → (Incorrect Choice)
· Filariasis is caused by parasitic nematodes (Wuchereria bancrofti, Brugia malayi) transmitted by mosquitoes.
· It causes elephantiasis (severe lymphatic swelling), not hemorrhagic fever.