Joshua M. Piper

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

Nguyen H. Tran, Vidyashankara G. Iyer, Andreas C. Themistocleous, 2020, Lancet.

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

Nguyen H. Tran, Vidyashankara G. Iyer, Andreas C. Themistocleous, 2021, The Lancet.

Safety and immunogenicity of seven COVID-19 vaccines as a third dose (booster) following two doses of ChAdOx1 nCov-19 or BNT162b2 in the UK (COV-BOOST): a blinded, multicentre, randomised, controlled, phase 2 trial

Scott M Elliott, J. Haughney, V. Libri, 2021, The Lancet.

Safety, immunogenicity, and reactogenicity of BNT162b2 and mRNA-1273 COVID-19 vaccines given as fourth-dose boosters following two doses of ChAdOx1 nCoV-19 or BNT162b2 and a third dose of BNT162b2 (COV-BOOST): a multicentre, blinded, phase 2, randomised trial

J. Haughney, V. Libri, M. Kamal, 2022, The Lancet Infectious Diseases.