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Infectious diseases - The diseases which spread from a sick to a                                                       healthy person through physical contact, and are                                           contagious  are termed as infectious disease
                                       Example : tuberculosis,cold,flu etc.
Non-infectious diseases - The diseases that do not spread from a sick to                                                a healthy person through physical contact is                                                  called non-infectious diseases.
                                             Example: cancer, diabetes etc.

hope this helps 
do well
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