What are the different means by which infectious diseases are spread?

Infectious diseases can be spread through the air, water, food, vectors, physical contact, and sexual contact.

[Extra information:

Cholera is a waterborne disease. It can spread if food and, in particular, water becomes contaminated with the stools of an infected person.

Some water-borne diseases are
  1. Diarrhea. 
  2. Cholera. 
  3. Typhoid.
  4. Amoebiasis.]

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