The Omicron variant of the SARS-CoV-2 virus was discovered in South Africa and emerged in November 2021. Scientists have already learned a lot about Omicron. One of the key questions that remains is how well our immune systems deal with infection by this variant.
This is important for two reasons. Firstly, Omicron is highly infectious and has swept across the world. Thus, many people have been exposed to Omicron and we need to define how well such people are protected from future re-infections by emerging variants.
