Intended for healthcare professionals

Letters How long does covid-19 immunity last?

Longitudinal data on covid-19 immunity could be collected from medical records

BMJ 2021; 374 doi: (Published 11 August 2021) Cite this as: BMJ 2021;374:n1976
  1. Azeem Majeed, professor of primary care and public health
  1. Department of Primary Care and Public Health, Imperial College London, London, UK
  1. a.majeed{at}

Baraniuk reviews what we know about natural and vaccine induced immunity to SARS-CoV-2.1 Vaccines for covid-19 were eagerly awaited, and their rapid development, testing, approval, and implementation are a tremendous achievement by scientists, drug companies, drugs regulators, politicians, and healthcare professionals and by the patients who have received them.2 Early real world data from vaccine recipients in England, Scotland, and Israel show that vaccination provides …

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