The REACT programme is made up of four different research programmes related to COVID-19 in England:

REACT studies

Graphic of a nose and throat swab

REACT-1

Each month during the pandemic over 150,000 randomly selected people across England were sent a nose/throat swab test to take at home. This study helped us understand how many people were infected with the coronavirus, including those are weren't showing symptoms.

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Graphic of an antibody test

REACT-2

Our REACT-2 study looked at how many people already had COVID-19 and developed antibodies against the virus. A number of different studies assessed the accuracy and usability of different antibody tests. These were then used to enhance our understanding of the spread of COVID-19 across England.

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REACT Long COVID

The REACT Long COVID (REACT-LC) study seeks to understand how biological, environmental and social factors determine why some people who are infected with COVID-19 continue to have symptoms for several weeks or months – a condition called Long Covid - while others don’t. The study draws on the 2.4 million REACT participants.

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REACT Children and Young People

The REACT Children and Young People study involves follow-up of over 10,000 children aged 5-17 years to investigate socio-demographic factors affecting why some children get Long COVID and others don’t, and the impact of Long COVID.

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Contact us

For general REACT enquiries 

Email: react.study@imperial.ac.uk

Media

For media or communications enquiries only please contact: Jack Stewart

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REACT: COVID-19 Community Network

For the public, patients and REACT participants who want to stay informed and involved in our ongoing COVID-19 and Long COVID research.