Q&A: How Many COVID-19 Variants Like Delta Are Possible? – Johns Hopkins Coronavirus Resource Center

SARS-CoV-2, like all viruses, is constantly mutating – a process that has spawned 11 different named variants of the virus during the pandemic so far. The fastest spreading of those has been Delta, a much more transmissible variant that is thriving in a world where only about 13% of the international population had been vaccinated by mid-July.

Source: Q&A: How Many COVID-19 Variants Like Delta Are Possible? – Johns Hopkins Coronavirus Resource Center