Covid-19 virus variants spread April 11, 2021 UK virus variant is the most prevalent in US. Young people driving rise in Covid-19 infections. Where: USA The Facts ▪ Dr. Rochelle Walensky, Director of Centers for Disease Prevention and Control, said the prevalence of variants of concern (VOC) is increasing. ▪ The UK variant is the most dominant VOC in the US. ▪ CDC data shows 19,554 cases have been reported showing the variant B.1.1.7 (UK variant). ▪ The B.1.1.7 variant, initially detected in the UK, was first identified in the US in Dec. 2020. ▪ Walensky said in a briefing, the rise in youth sports and extra-curricular activities were contributing to the steady increase in cases. ▪ A virus with one or more new mutations is called a variant. Source Documents Direct, authoritative source material on this story. Reference Articles Articles Citable has ingested related to this story. Media Coverage Percentage of day’s news Article Sentiment Citable analysis assessing the language of each article related to the story as positive, negative or neutral. Publications Publications covering this story along with their cumulative positive or negative sentiment.