Merryn Voysey

Associate Professor

Head of Statistics in Vaccinology

Merryn Voysey is Associate Professor of Statistics in Vaccinology at the Oxford Vaccine Group. She has extensive experience in vaccines research including clinical trials and observational studies, and is the lead methodologist for the Oxford-AstraZeneca vaccine trials. Her current research interests include maternal antibody interference, vaccine correlates of protection, and the seroepidemiology of bacterial infections

She is the Principal Investigator on a large individual participant data meta-analyses of serological data from vaccine clinical trials funded through the NIHR HTA, and a multi-country study of maternal measles seroprevalence in infants funded by the Bill and Melinda Gates Foundation.

Key publications

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.
Journal article

Voysey M. et al, (2021), Lancet, 397, 99 - 111
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.
Journal article

Voysey M. et al, (2021), Lancet, 397, 881 - 891
Phase 3 Efficacy Analysis of a Typhoid Conjugate Vaccine Trial in Nepal.
Journal article

Shakya M. et al, (2019), N Engl J Med, 381, 2209 - 2218
Seroefficacy of Vi Polysaccharide–Tetanus Toxoid Typhoid Conjugate Vaccine (Typbar TCV)
Journal article

Voysey M. and Pollard AJ., (2018), Clinical Infectious Diseases, 67, 18 - 24
Serotype-Specific Correlates of Protection for Pneumococcal Carriage: An Analysis of Immunity in 19 Countries.
Journal article

Voysey M. et al, (2018), Clin Infect Dis, 66, 913 - 920
The Influence of Maternally Derived Antibody and Infant Age at Vaccination on Infant Vaccine Responses : An Individual Participant Meta-analysis.
Journal article

Voysey M. et al, (2017), JAMA Pediatr, 171, 637 - 646

Recent publications

Heterologous versus homologous COVID-19 booster vaccination in previous recipients of two doses of CoronaVac COVID-19 vaccine in Brazil (RHH-001): a phase 4, non-inferiority, single blind, randomised study.
Journal article

Costa Clemens SA. et al, (2022), Lancet
SARS-CoV-2 Omicron-B.1.1.529 leads to widespread escape from neutralizing antibody responses.
Journal article

Dejnirattisai W. et al, (2022), Cell
Correlates of protection against symptomatic and asymptomatic SARS-CoV-2 infection
Journal article

Feng S. et al, (2021), Nature Medicine
Omicron-B.1.1.529 leads to widespread escape from neutralizing antibody responses.
Dejnirattisai W. et al, (2021)
Childhood Invasive Bacterial Disease in Kathmandu, Nepal (2005-2013).
Journal article

Carter MJ. et al, (2021), Pediatr Infect Dis J

More publications