4000+ COVID Variants

Source : UK Vaccine Deployment Minister Nadhim Zahawi

https://www.reuters.com/article/us-health-coronavirus-britain-idCAKBN2A40U0

https://learningenglish.voanews.com/a/britain-s-vaccine-chief-says-world-faces-4-000-covid-19-variants/5765566.html

https://www.leparisien.fr/societe/sante/le-covid-19-a-deja-genere-4000-variants-04-02-2021-8423097.php

https://edition.cnn.com/2021/01/28/health/variants-coronavirus-new-popping/index.html