Question

What are the various ways in which communicable diseases can occur and spread?

Answer 1

Communicable diseases can occur and spread in the following ways:

• Direct method:

Direct contact: Diseases like measles, chicken pox, and fungal infections are spread through direct contact with an infected person.

• Indirect method: This includes the following ways:
• Contaminated food and water or drink: Many diseases are transferred by food, water or drink that are contaminated or not washed properly.
• Droplet infection: Many viral and bacterial diseases of the respiratory tract are transmitted through droplets.
• Touching and sharing items used by the infected person: The use of same towel, handkerchief, and many more that are used by patient to a healthy person.
• Vectors: Vectors are those organisms that carry germs from source of infection but themselves do not get infection. For example mosquito, houseflies.
• Contaminated air and water are the abiotic factors that transfer diseases to healthy person and make them sick.