News Covid-19: Pfizer vaccine efficacy was 52% after first dose and 95% after second dose, paper shows BMJ 2020; 371 doi: https://doi.org/10.1136/bmj.m4826 (Published 11 December 2020) Cite this as: BMJ 2020;371:m4826 Read our latest coverage of the coronavirus outbreak Article Related content Metrics Responses Peer review Related articles News Covid-19: FDA panel votes to authorise Pfizer BioNTech vaccine Published: 11 December 2020; BMJ 371 doi:10.1136/bmj.m4799 News Covid-19: Logistical problems frustrate GPs ready to deliver vaccine in England Published: 15 December 2020; BMJ 371 doi:10.1136/bmj.m4849 News Covid-19: Assess the effects of extending Pfizer vaccine dosing interval, expert urges Published: 19 January 2021; BMJ 372 doi:10.1136/bmj.n162 News Covid-19: Reports from Israel suggest one dose of Pfizer vaccine could be less effective than expected Published: 22 January 2021; BMJ 372 doi:10.1136/bmj.n217 News Covid-19: Where are we on vaccines and variants? Published: 02 March 2021; BMJ 372 doi:10.1136/bmj.n597 See more Salah Sorour BMJ May 27, 2022, 377 o1352; DOI: https://doi.org/10.1136/bmj.o1352 Covid-19: Suicide rates fell during Brazil’s first wave but increased in older people BMJ May 27, 2022, 377 o1351; DOI: https://doi.org/10.1136/bmj.o1351 GMC to review Manjula Arora case after backlash from doctors BMJ May 27, 2022, 377 o1350; DOI: https://doi.org/10.1136/bmj.o1350 Stephen Furniss BMJ May 27, 2022, 377 o1317; DOI: https://doi.org/10.1136/bmj.o1317 Child protection services: Review calls for overhaul after deaths of two children BMJ May 27, 2022, 377 o1349; DOI: https://doi.org/10.1136/bmj.o1349 Cited by... Changing Dynamics of COVID-19 in the U.S. with the Emergence of the Delta Variant: Projections of the COVID-19 SimulatorAbstract Fulltext PDF Gender differences in the determinants of willingness to get the COVID-19 vaccine among the working-age population in JapanAbstract Fulltext PDF The impact of COVID-19 vaccination campaigns accounting for antibody-dependent enhancementAbstract Fulltext PDF Covid-19: Where are we on vaccines and variants?Abstract Fulltext PDF Comorbidities in SARS-CoV-2 Patients: a Systematic Review and Meta-AnalysisAbstract Fulltext PDF Collaboration between the Fab and Fc contribute to maximal protection against SARS-CoV-2 in nonhuman primates following NVX-CoV2373 subunit vaccine with Matrix-M™ vaccinationAbstract Fulltext PDF Covid-19: Reports from Israel suggest one dose of Pfizer vaccine could be less effective than expectedAbstract Fulltext PDF Covid-19: Assess the effects of extending Pfizer vaccine dosing interval, expert urgesAbstract Fulltext PDF Viral Variants and Vaccinations: If We Can Change the COVID-19 Vaccine... Should We?Abstract Fulltext PDF Covid-19: Logistical problems frustrate GPs ready to deliver vaccine in EnglandAbstract Fulltext PDF