SAN FRANCISCO -- The R1 variant is the new strain of COVID-19 researchers are keeping a close eye on. The CDC identified "multiple spike protein mutations" in this variant. "The R.1 variant does carry ...
A new COVID-19 variant that was unheard of just months ago is now projected to be the second-most common strain in the United States. Variant NB.1.8.1 was first detected in China in January but ...
Health authorities have confirmed the presence of a new COVID-19 variant in the United States, marking the latest development in the ongoing evolution of the coronavirus pandemic. The strain, ...
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