A person's immune response to variants of SARS-CoV-2, the virus that causes COVID-19, depends on their previous exposure – and differences in the focus of immune responses will help scientists understand how to optimise vaccines in the future to provide broad protection. A new study has found that people differ in how vulnerable they are to different mutations in emerging variants of SARS-CoV-2. This is because the variant of SARS-CoV-2 a person was first exposed to determines how well their immune system responds to different parts of the virus, and how protected they are against other variants.

https://www.miragenews.com/research-prior-infections-vaccines-affect-covid-1098364/

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