Define an infectious disease. Give any one example of it.
(N/A) An infectious disease is a disease caused by pathogens (such as bacteria,viruses,fungi,or parasites) that can spread from an infected person to a healthy person through various modes of transmission like air,water,food,or physical contact.
Example: $Common \ cold$ or $Chickenpox$.
Example: $Common \ cold$ or $Chickenpox$.
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