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UK doctors have advice for the U.S. on fighting the new Covid strain

CNBC

The variant, known as B.1.1.7., has an unusually high number of mutations and is associated with more efficient and rapid transmission.

January 22nd 2021, 6:09 am
اقرأ على الموقع الرسمي

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Get it on Google Play تحميل تطبيق نبأ للآندرويد مجانا