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

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, Mariana Alves, Fábio Ferreira Amorim, Foteini Andritsou, Rachel Anslow, Matthew Appleby, Edward H. Arbe-Barnes, Mark P. Ariaans, Beatriz Arns, Laiana Arruda, Paula De Almeida Azi, Lorena Azi, Gavin Babbage, Catherine Bailey, Kenneth F. Baker, Megan Baker, Natalie Baker, Philip Baker, Lisa Baldwin, Ioana Baleanu, Danieli Bandeira, Anna Bara, Marcella A.S. Barbosa, Debbie Barker, Gavin Barlow, Eleanor Barnes, Andrew Barr, Jordan R. Barrett, Jessica Barrett, Louise Bates, Alexander Batten, Kirsten Beadon, Emily Beales, Rebecca Beckley, Sandra Belij‐Rammerstorfer, Jonathan Bell, Duncan Bellamy, Nancy Bellei, Sue Belton, Adam Berg, Laura M. Bermejo, Eleanor Berrie, Lisa Berry, Daniella Berzenyi, Amy Beveridge, Kevin R. Bewley, Helen Bexhell, Sutika Bhikha, As’ad E. Bhorat, Zaheda E. Bhorat, Else M. Bijker, Geeta Birch, Sarah Birch, Adam Bird, Olivia Bird, Karen Bisnauthsing, Mustapha Bittaye, K. Blackstone, Luke Blackwell, Heather Bletchly, Caitlin L. Blundell, Susannah R. Blundell, Pritesh Bodalia, Bruno Cruz Boettger, Emma Bolam, Elena Boland, Daan Bormans, Nicola Borthwick, Francesca Bowring, Amy Boyd, Penny Bradley, Tanja Brenner, Phillip J. Brown, Claire Brown, Charlie Brown-O’Sullivan, S Bruce, Emily Brunt, Ruaridh Buchan, William Budd, Yusuf A. Bulbulia, Melanie Bull, Jamie Burbage, Hassan Burhan, Aileen Burn, Karen R. Buttigieg, Nicholas Byard, Ingrid Cabera Puig, Gloria Calderón, Anna Calvert, Susana Camara, Michelangelo Cao, Federica Cappuccini, João C. R. Cardoso, Melanie Carr, Miles W. Carroll, Andrew Carson‐Stevens, Yasmin de M. Carvalho, José Antônio Mainardi de Carvalho, Helen R. Casey, Paul Cashen, Thaís Castro Ribeiro, Lucía Carratalá-Castro, Katrina Cathie, Ana Cavey, José Cerbino-Neto, Jim Chadwick, David Chapman, Sue Charlton, Irina Chelysheva, Oliver Chester, Sunder Chita, Jee-Sun Cho, Liliana Cifuentes, Elizabeth Clark, Matthew Clark, Andrea Clarke, Elizabeth Clutterbuck, Sarah L.K. Collins, Christopher P. Conlon, Sean Connarty, Naomi S. Coombes, Cushla Cooper, Rachel Cooper, Lynne Cornelissen, Tumena Corrah, Catherine Cosgrove, Tony Cox, Wendy E.M. Crocker, Sarah Crosbie, Lorraine Cullen, Dan Cullen, Debora R.M.F. Cunha, Christina J. Cunningham, Fiona C. Cuthbertson, Suzete Nascimento Farias da Guarda, Larissa P. da Silva, Brad E. Damratoski, Zsofia Danos, Maria T.D.C. Dantas, Paula Darroch, Mehreen S. Datoo, Chandrabali Datta, Malika Davids, Sarah L. Davies, H. Dele Davies, Elizabeth J. Davis, Judith A. Davis, John D. Davis, Maristela Miyamoto de Nobrega, Lis Moreno De Oliveira Kalid, David Dearlove, Tesfaye Demissie, Amisha Desai, Stefania Di Marco, Claudio Di Maso, Maria Isabel Saraiva Dinelli, Tanya Dinesh, Claire Docksey, Christina Dold, Tao Dong, Francesca R. Donnellan, Tannyth Dos Santos, Thainá G. dos Santos, Erika Pachecho Dos Santos, Naomi Douglas, Charlotte Downing, Jonathan Drake, Rachael Drake-Brockman, Kimberley Driver, Ruth Drury, Susanna Dunachie, Benjamin Durham, Lidiana Dutra, Nicholas Easom, Samual van Eck, Mandy Edwards, Nick J. Edwards, Omar M. El Muhanna, Sean C. Elias, Mike Elmore, Marcus Rex English, Alisgair Esmail, Yakub Moosa Essack, Eoghan C. W. Farmer, Mutjaba Farooq, Madi Farrar, Leonard Farrugia, Beverley Faulkner, Sofiya Fedosyuk, Sally Felle, Shuo Feng, Carla Ferreira Da Silva, Samantha Field, Richard Fisher, Amy Flaxman, James L. K. Fletcher, Hazel Fofie, Henry Fok, Karen Ford, Jamie Fowler, Pedro Henrique Almeida Fraiman, Emma Francis, Marília Miranda Franco, John Frater, M Freire, Samantha H. Fry, Sabrina Fudge, Julie Furze, Michelle Fuskova, Pablo Galian-Rubio, Eva Galiza, Harriet Garlant, Madita Gavrila, A Geddes, Karyna A. Gibbons, Ciarán Gilbride, Hardeep Singh Gill, Sharon A. Glynn, Kerry Godwin, Karishma Gokani, Ursula Carvalho Goldoni, Maria Goncalves, Isabela G. S. Gonzalez, Jayne Goodwin, Amina Goondiwala, Katherine Gordon-Quayle, Giacomo Gorini, Janet Grab, Lara Gracie, Melanie Greenland, Nicola M. Greenwood, Johann Greffrath, Marisa Groenewald, Leonardo Grossi, Gaurav Gupta, Mark J. 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Júnior, Joanne Kadziola, Reshma Kailath, Faeeza Kana, Konstantinos Karampatsas, Mwila Kasanyinga, Jade Keen, Elizabeth J. Kelly, Dearbhla Kelly, Debbie M. Kelly, Sarah Kelly, David Kerr, Renato de Ávila Kfouri, Liaquat Khan, Baktash Khozoee, Sarah Kidd, Annabel Killen, Jasmin Kinch, Patrick Kinch, Lloyd D. W. King, Thomas King, Lucy Kingham, Paul Klenerman, Francesca Knapper, Julian C. Knight, Daniel Knott, Stanislava Koleva, Matilda Lang, Gail Lang, Colin W. Larkworthy, Jessica P. J. Larwood, Rebecca‐Jane Law, Erica Lazarus, Amanda Leach, Emily A. Lees, Nana‐Marie Lemm, Alvaro Edson Ramos Lessa, Stephanie Leung, Yuanyuan Li, Amelia M. Lias, Konstantinos Liatsikos, Aline Linder, Samuel Lipworth, Shuchang Liu, Xinxue Liu, Adam Lloyd, Stephanie Lloyd, Lisa Loew, Raquel Lopez Ramon, Leandro Bonecker Lora, Vicki Lowthorpe, Kléber Giovanni Luz, Jonathan Macdonald, Gordon MacGregor, Meera Madhavan, David O. Mainwaring, Edson Makambwa, Rebecca Makinson, Mookho Malahleha, Ross Malamatsho, Garry Mallett, Kushal Mansatta, Takalani Maoko, Katlego Mapetla, Natalie G. Marchevsky, Spyridoula Marinou, Emma Marlow, Gabriela N. Marques, Paula Marriott, Richard P. Marshall, Julia L. Marshall, Flávia J. Martins, Masebole Masenya, Mduduzi Masilela, Shauna K. Masters, Moncy Mathew, Hosea Matlebjane, Kedidimetse Matshidiso, Olga Mazur, Andrea Mazzella, Hugh McCaughan, Joanne McEwan, Joanna McGlashan, Lorna McInroy, Zoe McIntyre, Daniela McLenaghan, Nicky McRobert, Steve McSwiggan, Clare Megson, Savviz Mehdipour, Wilma Meijs, Renata Mendonça, Alexander J. Mentzer, Neginsadat Mirtorabi, Celia Mitton, Sibusiso Mnyakeni, Fiona Moghaddas, Kgaogelo Molapo, Mapule Moloi, Maria Moore, M. 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Ribiero, Marivic Ricamara, Alex Richter, Neil Ritchie, Adam Ritchie, Alexander J. Robbins, Hannah Roberts, Ryan Robinson, Hannah Robinson, Talita Trevizani Rocchetti, Beatriz Pinho Rocha, Sophie Roche, Christine S. Rollier, Louisa Rose, Amy Russell, Lindie Rossouw, Simon Royal, Indra Rudiansyah, Sarah Ruiz, Stephen Saich, Claudia Sala, Jessica Sale, Ahmed M. Salman, Natalia Salvador, Stephannie Salvador, Milla Dias Sampaio, Annette D. Samson, Amada Sanchez-Gonzalez, Helen Sanders, Katherine Sanders, Erika Santos, Mayara F.S. Santos Guerra, Iman Satti, Jack E. Saunders, Caroline Saunders, Aakifah Bibi Arif Sayed, Ina Schim van der Loeff, Annina B. Schmid, Ella Schofield, Gavin Screaton, Samiullah Seddiqi, Rameswara R. Segireddy, Roberta Senger, Sonia Serrano, Rajiv Shah, Imam H. Shaik, Hannah Sharpe, Katherine Sharrocks, R. H. Shaw, Adam Shea, Amy Shepherd, James G. Shepherd, Farah Shiham, Emad Sidhom, Sarah E. 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West, Caroline White, Rachel White, Paul Williams, Rachel Williams, Rebecca Winslow, Mark Woodyer, Andrew Worth, Daniel Wright, Marzena Wroblewska, Andy Yao, Rafael Leal Zimmer, Dalila Zizi, Peter Zuidewind

The Lancet, 2020