How Northern California’s COVID-19 variant stacks up against the rest
https://www.popsci.com/story/health/covid-19-strain-uk-south-africa/
Virus variants in Asia threaten the whole world | Coronavirus and Covid-19 - latest news about COVID-19 | DW | 01.06.2021
https://www.dw.com/en/virus-variants-in-asia-threaten-the-whole-world/a-57745685