As the global COVID-19 pandemic continues - viral variants have become the latest concern But variants are complicated. Each one is made up of a collection of mutations, all of which have the potential to change the SARS-CoV-2 virus in unexpected ways. So what do scientists mean when they talk about variants and what might this mean for the future of the pandemic?

• COVID-19 Variants:  https://www.youtube.com/watch?v=B8UEZ9cfgz4