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Differentiate between infectious and non infectious diseases.

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Differences between infectious and non-infectious diseases:

Infectious or communicable diseases Non-infections or Non-communicable diseases
(i) These are transmitted from an infected person to a healthy person. (i) These are not transmitted from an infected person to the healthy person.
(ii) These are caused by pathogens e.g., viruses, bacteria etc. (ii) There is no role of pathogens.
(iii) These are brought about by extrinsic or external factors. (iii) These may be brought by intrinsic or internal factors.
(iv) Community hygiene can reduce the incidence of infectious disease. (iv) Community hygiene is in effective in reducing the incidence of non- infectious diseases.

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