A new strain of COVID-19 prevalent in China has been identified in multiple areas in the United States. The new strain—known as COVID-19 NB 1.8.1—was first detected in China in January this year, and ...
The Centers for Disease Control and Prevention's airport screening program has detected multiple cases of the new COVID-19 variant NB.1.8.1, which has been linked to a large surge of the virus in ...
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