I know cold sores are contagious. Are fever blisters contagious?
cold sores are contagious for one week prior to their even showing up and remain contagious for three weeks after they are gone! The virus lives in your nervous system, and when you have an outbreak, its a month long affair! I would suggest that you stay home this time around!
Almost everyone gets cold sores, but are they contagious? Dr. Schultz will share whether this is fact or fiction.
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