A recent Lancet review and meta analysis titled "Past SARS-CoV-2 infection protection against re-infection: a systematic review and meta-analysis" has found that protection from past infection and any symptomatic disease is comparatively good for all variants of the COVID causing coronavirus.A recent Lancet review and meta analysis titled "Past SARS-CoV-2 infection protection against re-infection: a systematic review and meta-analysis" has found that protection from past infection and any symptomatic disease is comparatively good for all variants of the COVID causing coronavirus.
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