Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

A new study has found that 99% of people generate a robust immune response against COVID-19 after just one dose of the Pfizer vaccine, and that after two doses levels of protection were even stronger.

3D illustration of coronavirus © National Institute of Allergy and Infectious Diseases NIH

The PITCH (Protective Immunity from T cells to COVID-19 in Health workers) study, led by Oxford and Sheffield Universities with support from the UK Coronavirus Immunology Consortium, examined how the immune system responds to COVID-19 after one dose of the Pfizer vaccine among people who have been infected by COVID-19 before and those who have not.  

It suggests one dose of the vaccine protects against severe disease, supporting the decision to delay the second dose and provide protection to as many higher-risk groups as possible by providing more first doses. The study showed after two doses levels of protection were even stronger, underlining the importance of people coming forward for their second dose.

Between 9 December 2020 and 9 February 2021, researchers from the Universities of Sheffield, Oxford, Liverpool, Newcastle and Birmingham analysed blood samples from 237 healthcare workers to understand their T cell and antibody responses following vaccination from the Pfizer vaccine.

Read the full story on the NIHR Oxford Biomedical Research Centre website.

Similar stories

Labelling proteins through the diet gives new insights into how collagen-rich tissues change as we age

A new study, published in eLife, uses advanced tissue analysis technology to show how the incorporation of new proteins changes in bone and cartilage with age.

Drug could help diabetic hearts recover after heart attack - Oxford research

Researchers at the University of Oxford have identified a drug that could ultimately help improve heart function in people with diabetes who have heart attacks.

Largest ever global study of tuberculosis identifies genetic causes of drug resistance

Using cutting-edge genomic sequencing techniques, researchers at the University of Oxford have identified almost all the genomic variation that gives people resistance to 13 of the most common tuberculosis (TB) drug treatments.

Peter Horby receives prestigious award for outstanding service to public health

The Faculty of Public Health (FPH) has awarded its prestigious Alwyn Smith Prize to Professor Sir Peter Horby (Nuffield Department of Medicine) for 2020/2021 in recognition of his outstanding service to public health as a global leader in epidemic science.

Six new Fellowships announced as part of Oxford-Bristol Myers Squibb Fellowships Programme

The Oxford - Bristol Myers Squibb (BMS) Fellowships Programme continued to demonstrate significant progress over the last year, despite the challenges associated with the global pandemic, including restricted lab access and work from home guidance. Today, we are pleased to announce six new Oxford-BMS Fellowships for 2021.

Researchers set out steps to address mental health effects of the pandemic on young people

Researchers have outlined 14 steps that schools, mental health services and policymakers can take to help children and young people whose mental health has been affected by the COVID-19 pandemic.