Vaccines have played a major role in mitigating the harms of the COVID pandemic since their rollout began just over two years ago. They’re estimated to have saved tens of millions of lives around the globe.
The initial crop of COVID vaccines was designed to train our immune systems to recognise the spike protein on the surface of the original strain of SARS-CoV-2 (the virus that causes COVID-19). But as we well know, since SARS-CoV-2 was first identified it has continued to mutate and evolve into a range of distinct variants.
