Give reasons for the following
One should cover the mouth while sneezing.

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Solution

Communicable diseases:
For the prevention and control of communicable diseases, one should cover the mouth while sneezing.
Communicable diseases are infectious diseases that are caused by a number of disease-causing organisms called pathogens like bacteria, fungi, and protozoans.
These type of diseases spreads rapidly from one person to another by various means like contact, water, air, contaminated food, etc. Example-cholera, typhoid, dengue, etc.

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