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We Asked a Former Acting CDC Director About the Omicron Variant. Here's What He Said

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It is important to take the emergence of this new strain seriously until we know more about it. What we don't know about Omicron right now far exceeds what we do know, but what we've learned so far is cause for concern. Omicron has more than 50 mutations. Many of them are in the spike protein region of the virus, which is the area targeted by our current vaccines and some of our treatments. That raises the question as to whether it will be able to evade our immune systems and the protections ...