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However, its encouraging that the available data suggests that most people who recover from COVID-19 develop an immune response that provides protection against reinfection for some time, although were still learning how strong this protection is, and how long it lasts

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Mendelian randomisation (MR) analysis In the present study, a modified Mendelian randomisation approach was performed to investigate a potential causal relationship 36,65 , in which non-pleiotropic polygenic risk scores (i.e., the valid-PRS) were established as instrument variables of randomised experiments for potential causal inference