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Question

Why are infectious diseases are very common?


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Solution

Infectious diseases:

  1. Infectious diseases are said to be diseases caused by various pathogenic microorganisms such as viruses, bacteria, protozoans, fungi, and several other parasites.
  2. These infectious diseases are very common as they can be transmitted by animals, humans, insects, or other agents.
DiseasePathogen
TyphoidBacteria
Common coldVirus
InfluenzaVirus
CholeraBacteria
Elephantiasisworms
Kalaazarprotozoa

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