Understanding the precise nature and durability of protective immunity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is essential in order to gain insight into the pathophysiology of coronavirus disease 2019 (COVID-19) and to develop novel treatment strategies to this disease. Here, I succinctly summarize what is currently known and unknown about the immune response during COVID-19 and discuss whether natural infections can lead to herd immunity.
Keywords: B cells; SARS-CoV-2; T cells; herd immunity.
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