Protection and Waning of Natural and Hybrid Immunity to SARS-CoV-2 – New England Journal of Medicine Editorial: Audio Interview: Waning Immunity against Covid-19   Commentary on Twitter Protection against SARS-CoV-2 waned over time in both vaccinated and previously infected persons; an additional vaccine dose restored protection, find investigators from Israel. https://t.co/617uBmWu8l pic.twitter.com/yiDnBbCuQ5 — NEJM (@NEJM) […]

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