米国で新型コロナの変異種が新たに発生か、感染力50％高い＝ホワイトハウス - Sputnik 日本
https://jp.sputniknews.com/covid-19/202101098069366/
White House warned governors about 'USA variant' of Covid-19, but no such discovery has been made - CNNPolitics
https://edition.cnn.com/2021/01/08/politics/white-house-coronavirus-task-force-reports/index.html
