Why Are the New Strains of COVID-19 More Contagious? Here's What We Know So Far

Why Are the New Strains of COVID-19 More Contagious? Here's What We Know So Far

Why Are the New Strains of COVID-19 More Contagious? Here's What We Know So Far

One of the new strains is already infecting people in the US. Here's what we know so far.

User: Health Magazine

Views: 233

Uploaded: 2021-01-11

Duration: 01:14

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