# Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: an interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK

**Type:** Papers  
**Canonical URL:** https://scholariq.org/papers/safety-and-efficacy-of-the-chadox1-ncov-19-vaccine-azd1222-against-sars-cov-2-an/

## Facts

| Field | Value |
| --- | --- |
| Author Names | Merryn Voysey,Sue Ann Costa Clemens,Shabir A. Madhi,Lily Yin Weckx,Pedro M. Folegatti,Parvinder K. Aley,Brian Angus,Vicky L. Baillie,Shaun Barnabas,Qasim Bhorat,Sagida Bibi,Carmen Briner,Paola Cicconi,Andrea M. Collins,Rachel Colin-Jones,Clare Cutland,Thomas C. Darton,Keertan Dheda,C.J. Duncan,Katherine R. W. Emary,Katie Ewer,Lee Fairlie,Saul N. Faust,Shuo Feng,Daniela M. Ferreira,Adam Finn,Anna L. Goodman,Catherine Green,Christopher Green,Paul T. Heath,Catherine Hill,Helen Hill,Ian Hirsch,Susanne H. Hodgson,Alane Izu,Susan Jackson,Daniel Jenkin,Carina C. D. Joe,Simon Kerridge,Anthonet Koen,Gaurav Kwatra,Rajeka Lazarus,Alison M. Lawrie,Alice Lelliott,Vincenzo Libri,Patrick Lillie,Raburn M. Mallory,Ana Verena Almeida Mendes,Eveline Pı́polo Milan,Angela M. Minassian,Alastair McGregor,Hazel Morrison,Yama F Mujadidi,Anusha Nana,Peter O’Reilly,Sherman D. Padayachee,Ana Maria Pittella,Emma Plested,Katrina M. Pollock,Maheshi Ramasamy,Sarah Rhead,Alexandre Vargas Schwarzbold,Nisha Singh,Darren Smith,Rinn Song,Matthew D. Snape,Eduardo Sprinz,Rebecca Sutherland,Richard Tarrant,Emma C. Thomson,M. Estée Török,Mark Toshner,David P. J. Turner,Johan Vekemans,Tonya Villafana,Marion Watson,Christopher J. Williams,Alexander D. Douglas,Adrian V. S. Hill,Teresa Lambe,Sarah C. Gilbert,Andrew J. Pollard,Marites Aban,Fatola Abayomi,Kushala W.M. Abeyskera,Jeremy Aboagye,Matthew Adam,Kirsty Adams,James P. Adamson,Yemi Adelaja,Gbadebo Adewetan,Syed Adlou,Khatija Ahmed,Yasmeen Akhalwaya,Saajida Akhalwaya,Andrew Alcock,Aabidah Ali,Elizabeth Allen,Lauren Allen,Thamires C. D. S. C Almeida |
| Citations | 5,024 |
| DOI | 10.1016/s0140-6736(20)32661-1 |
| Fields | Medicine,Social Sciences |
| Open Access | true |
| OA Status | hybrid |
| OA URL | http://www.thelancet.com/article/S0140673620326611/pdf |
| OpenAlex ID | https://openalex.org/W3111590711 |
| PMID | 33306989 |
| Type | article |
| Year | 2020 |

## Paper authors

- [Matthew E. Wand](https://scholariq.org/researchers/matthew-e-wand/)
- [John A. Henry](https://scholariq.org/researchers/john-a-henry/)

## Paper journal

- [The Lancet](https://scholariq.org/journals/the-lancet/)

## Paper primary topic

- [SARS-CoV-2 and COVID-19 Research](https://scholariq.org/topics/sars-cov-2-and-covid-19-research/)

## Paper topics

- [SARS-CoV-2 and COVID-19 Research](https://scholariq.org/topics/sars-cov-2-and-covid-19-research/)
- [COVID-19 Clinical Research Studies](https://scholariq.org/topics/covid-19-clinical-research-studies/)
- [Vaccine Coverage and Hesitancy](https://scholariq.org/topics/vaccine-coverage-and-hesitancy/)

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Source: ScholarIQ — public research metadata, principally OpenAlex. See https://scholariq.org/sources/ for provenance and https://scholariq.org/methodology/ for what these figures mean.