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Highly contagious delta variant on path to become dominant strain in the US
Doctor on spread of highly contagious COVID-19 variant in U.S.
Delta Variant Becomes Dominant COVID Strain In U.S. As Vaccination Rate Falls
COVID-19 delta variant becoming globally dominant strain: WHO
Delta Variant Predicted To Become Dominant U.S. Strain
Dr. Anthony Fauci: Delta variant is the greatest threat to eliminating Covid-19
Delta variant, now in 124 countries, on track to become dominant COVID-19 strain within months: WHO
Gottlieb says coronavirus Delta variant likely to become dominant U.S. strain
Delta variant expected to become dominant strain in Virginia as case counts rise
New warnings as emerging Delta variant found in 37 states l GMA
6 things to know about the highly contagious coronavirus Delta variant | Yahoo News Explains
"I am very concerned" by Delta variant, expert says
