[5]Our data have been instrumental in detecting trends early like the emergence & takeover of new variants. We tracked the replacement of wt with Alpha, Delta with Omicron, then BA.1 with BA.2. We detected a small number of Omicron recombinants in our latest data (5 XE & 3 XL).

[4]“These trends are concerning since when a very high number of people are infected, this may lead to more people becoming seriously ill and needing to go to hospital. “Although restrictions have ended, I would urge people to still behave cautiously." - Prof Paul Elliott

[3] Our data show that infections have risen in all age groups and remain highest in primary school-aged children, with almost 1 in 10 (8.81%) 5-11-year-olds testing positive. However infections were falling or flattening in younger age groups while increasing in those aged 55+.

[2] We found that 6.37% of the population in England was infected in March. This is more than double our previous findings when 1 in 35 had the virus in Feb and 40% higher than the first Omicron peak in Jan. Read our preprint on the Omicron 'twin peaks': spiral.imperial.ac.uk/handle…

"The REACT Programme has become one of the world’s biggest studies of community COVID-19 testing and has been instrumental in tracking the progress of the epidemic - I know this study has been an invaluable source of data for policy makers all over the world." - Sir Tony Blair

Over 3 million people have taken part in our REACT study, helping us better understand England's #COVID19 situation and guide decisions to keep people safe. Find out how you can make a difference by participating in REACT. If you've been invited, please do take one simple test.

Over 2 million people in England have taken 1 simple test at home to make a huge difference to efforts to keep communities safer during the pandemic. By participating in our REACT study, you're helping us track the #COVID19 virus and stay vigilant. Thank you for taking part.

Watch @profhelenward, one of the leads of our REACT study, discussing our research that's working to better understand the treat #LongCOVID. YouTube link 👉 youtu.be/J4M4qWU-7DM

Have you been invited to take part in our #REACT study? If you've received a letter, make sure you respond and complete your sign up to the study. Then all you need to do is take one simple test & return your swab, helping us continue our vital research. reactstudy.org

Over 100,000 people took part in our latest REACT-1 study, revealing important data about the effectiveness of booster vaccines and doses in school-aged children. It's thanks to them that our study is possible. If you're invited to take part, please do take one simple test.

Today we released new important findings from our #ReactStudy, which are demonstrating the effectiveness of vaccines in school children and boosters. These results were possible thanks to the 100,000 people who took one test at home. If you receive an invite, please take part.