In Oregon, Scientists Find a Virus Variant With a Worrying Mutation - The New York Times
https://www.nytimes.com/2021/03/05/health/virus-oregon-variant.html
SARS-CoV-2 variants with E484K mutation show mRNA vaccine-induced antibody evasion
https://www.news-medical.net/news/20210318/SARS-CoV-2-variants-with-E484K-mutation-show-mRNA-vaccine-induced-antibody-evasion.aspx
Troubling "Eek" variant found in most Tokyo hospital COVID cases - NHK | Reuters
https://www.reuters.com/article/us-health-coronavirus-japan/troubling-eek-variant-found-in-most-tokyo-hospital-covid-cases-nhk-idUSKBN2BR03W
Virus Variants Threaten to Draw Out the Pandemic, Scientists Say - The New York Times
https://www.nytimes.com/2021/04/03/health/coronavirus-variants-vaccines.html