A new variant of the coronavirus first identified in South Africa is more contagious than earlier versions, experts said on Monday, but there is no evidence that it is more deadly. The new variant is 50 percent more contagious, said…
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How long could I be contagious before a positive virus test?
How long could I be contagious before a positive virus test? Studies have shown that people may be contagious for about two days before developing COVID-19 symptoms. In fact, right before developing symptoms is when people are likely the most…
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Q&A: Canker sores often go away on their own, are not contagious
DEAR MAYO CLINIC: Every few months, my teenage son gets canker sores in the back of his throat that really bother him and last for about a week. Is there something that he can do to prevent them? Will this…
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