1. Bacteria 
  2. Virus 
  3. Fungi 
  4. Protozoan
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Option 2 : Virus 

Influenza disease is caused by a Virus.

Diseases

Caused By

Tuberculosis

Bacteria

Influenza

Virus

Fungal Infection

Fungi

Malaria

Protozoan

 

Trick: Virus influence many Diseases

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