The more contagious Delta variant of Covid-19 now makes up 83% of sequenced samples in the United States, US Centers for Disease Control and Prevention Director Dr. Rochelle Walensky said Tuesday.
Los Angeles County health officials are once again asking their residents -- even the fully vaccinated ones -- to mask up, this time against a newer and more transmissible variant of the COVID-19 ...
The proportion was estimated at approximately 3% in late May. A highly contagious variant of the novel coronavirus that was initially identified in India now accounts for about 58% of all COVID-19 ...
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