What are communicable diseases? How are they different from deficiency diseases?
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These diseases are neither passed on from one person to another nor caused by pathogens. The diseases that are caused due to lack of nutrients, vitamins, minerals as anaemia, and goitre are called deficiency diseases. Communicable diseases are caused by microorganisms. Microorganisms that cause diseases are pathogens.
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They are generally caused by some bacteria, viruses or any other pathogens. For example, malaria, AIDS etc. Non-communicable diseases are the diseases which does not spread from one person to another person. They are generally caused by some nutrient deficiency, allergy etc.
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