To prevent infection, scientists suggest basic hygiene: Keep your hands away from your eyes, nose and mouth, and wash your hands often.
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All too often, while we are all getting ready for school and work, the water supply to the bathroom suddenly disappears, leaving everyone in mid-wash or with a mouth full of toothpaste.
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The saliva produced in the mouth by the physical act of chewing can wash away acids and bacteria, thereby protecting teeth.
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