The impact of the COVID-19 pandemic has been felt across the globe. Governments across the world during 2020 and into 2021 have quite rightly sought to minimise the loss of life through lockdowns of various types. This has had the desired effect and has reduced infection rates and mortality. From the start of 2021 we have seen the much-anticipated large-scale roll-out of vaccines which is now signaling the possible return to normality at least for some parts of the World.
However, a great deal of uncertainty remains, for example how COVID-19 will develop, and we have seen mutations with the emergence of the Brazil, South African, Kent and Indian variants. The real risk is that one of these variants impact on the immunity inferred by either previous infection or by vaccines.