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Which of the following diseases is caused by a virus?

1. Polio
2. Ringworm
3. Plague
4. Cholera

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Correct Answer - Option 1 : Polio

The correct answer is Polio.

  • Polio disease is caused by the virus.


  • Poliomyelitis, commonly shortened to polio, is an infectious disease caused by the poliovirus.
    • In about 0.5 per cent of cases, it moves from the gut to affect the central nervous system and there is muscle weakness resulting in flaccid paralysis.
    • This can occur over a few hours to a few days.
    • Prevention: Polio vaccine
  • Ringworm, also known as dermatophytosis, dermatophyte infection, or tinea, is a fungal infection of the skin.
    • Ringworm is a misnomer, since a fungus, not a worm, causes the infection.
    • The lesion caused by this infection resembles a worm in the shape of a ring hence the name ringworm.
  • Plague is an infectious disease caused by Yersinia pestis bacteria, usually found in small mammals and their fleas.
    • The disease is transmitted between animals via their fleas and, as it is a zoonotic bacterium, it can also transmit from animals to humans.
  • Cholera is an infectious disease that causes severe watery diarrhoea, which can lead to dehydration and even death if untreated.
    • It is caused by eating food or drinking water contaminated with a bacterium called Vibrio Cholerae.

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