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Which of the following diseases is caused by a virus? 
1. Influenza 
2. Pneumonia 
3. Cholera 
4. Whooping cough

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Correct Answer - Option 1 : Influenza 

The correct answer is Influenza.

  • Influenza:
    • Influenza is a viral infection that affects your respiratory system: nose, throat, and lungs.
    • Influenza is also known as flu, but it is not the same as the stomach flu virus that causes diarrhea and vomiting.
    • Influenza is spread directly or indirectly. For example, air droplets produced by sneezing or coughing are spread directly from person to person, and indirectly when contaminated droplets land on surfaces that are subsequently touched by an uninfected person.

  • Pneumonia:
    • Pneumonia is an infection that inflames one or two air sacs in the lungs.
    • The air sacs may be filled with fluid causing cough with sputum or pus, fever, chills, and shortness of breath. A variety of organisms including bacteria, viruses, and fungi can cause pneumonia.
  • Cholera:
    • Cholera is an acute diarrhoeal infection caused by ingestion of food or water contaminated with the bacterium Vibrio cholera.
  • Whooping cough:
    • Whooping cough is very serious, especially in babies and young children.
    • Whooping cough can cause pneumonia, epilepsy, brain damage, and death. Babies under one year old with whooping cough can be hospitalized or even die.

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