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Why the Delta Variant Is a New COVID-19 Threat —and How to Stay Safe

July 18, 2021

From the Everyday Health website

The highly transmissible delta variant of the coronavirus that causes COVID-19 threatens to undermine the progress that the United States has made to end the pandemic.

Delta is now the dominant variant in the United States and accounts for 51.7 percent of positive COVID-19 samples, according to the latest surveillance data from the Centers for Disease Control and Prevention (CDC).

The prevalence of the delta variant, along with the sluggish vaccination rate, are key factors in a recent 10 percent increase in the number of COVID-19 cases in the United States, said CDC director Rochelle Walensky, MD, MPH, in a July 1 briefing.

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