Introduction: The future of the COVID-19 pandemic depends on the evolution of the virus and immune protection stimulated by vaccination or upon exposure to natural infection. While most research focuses on vaccine efficacy, data remain unclear on the efficacy and duration of natural immune protection against infection.
Aim: In this article, we aim to determine the efficacy of natural immune protection against reinfection with COVID-19 or severe COVID-19.
The International Union of Immunological Societies (IUIS) expert committee (EC) on Inborn Errors of Immunity (IEI) reports here the 2022 updated phenotypic classification, which accompanies and complements the most-recent genotypic classification. This phenotypic classification is aimed for clinicians at the bedside and focuses on clinical features and laboratory phenotypes of specific IEI. In this classification, 485 IEI underlying phenotypes as diverse as infection, malignancy, allergy, auto-immunity and auto-inflammation are described, including 55 novel monogenic defects and 1 autoimmune phenocopy.
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