• Efficacy of ChAdOx1 nCoV-19 (AZD1222) vaccine against SARS-CoV-2 lineages circulating in Brazil 

      Clemens, Sue Ann Costa; Sprinz, Eduardo; Voysey, Merryn; Pollard, Andrew J.; Arns, Beatriz; Cunha, Debora Rosilei Miquini de Freitas; Dias, Ana Luiza Perez Olive; Pinheiro, Jéssica Morgana Gediel; Sorio, Guilherme Geraldo Lovato; Stein, Ricardo; Vieceli, Tarsila; Vieira, Taiane Alves; Zimmer, Rafael Leal; The AMPHEUS Project; Oxford COVID Vaccine Trial Group (2021) [Artigo de periódico]
      Several COVID-19 vaccines have shown good efficacy in clinical trials, but there remains uncertainty about the efficacy of vaccines against different variants. Here, we investigate the efficacy of ChAdOx1 nCoV-19 (AZD1222) ...
    • 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 

      Voysey, Merryn; Sprinz, Eduardo; Stein, Ricardo; Cunha, Debora Rosilei Miquini de Freitas; Silva, Larissa Pozzebon da; Santos, Thainá Garbino dos; Dias, Ana Luiza Perez Olive; Pinheiro, Jéssica Morgana Gediel; Sorio, Guilherme Geraldo Lovato; Vieira, Taiane Alves; Zambrano, Marina Bauer; Zimmer, Rafael Leal; Arns, Beatriz; Oxford COVID Vaccine Trial Group (2021) [Artigo de periódico]
      Background A safe and efficacious vaccine against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), if deployed with high coverage, could contribute to the control of the COVID-19 pandemic. We evaluated the ...
    • Single-dose administration and the influence of the timing of the booster dose on immunogenicity and efficacy of ChAdOx1 nCoV-19 (AZD1222) vaccine : a pooled analysis of four randomised trials 

      Voysey, Merryn; Sprinz, Eduardo; Stein, Ricardo; Cunha, Debora Rosilei Miquini de Freitas; Silva, Larissa Pozzebon da; Santos, Thainá Garbino dos; Dias, Ana Luiza Perez Olive; Pinheiro, Jéssica Morgana Gediel; Sorio, Guilherme Geraldo Lovato; Vieira, Taiane Alves; Zambrano, Marina Bauer; Zimmer, Rafael Leal; Arns, Beatriz; Oxford COVID Vaccine Trial Group (2021) [Artigo de periódico]
      Background The ChAdOx1 nCoV-19 (AZD1222) vaccine has been approved for emergency use by the UK regulatory authority, Medicines and Healthcare products Regulatory Agency, with a regimen of two standard doses given with an ...