"Table 1: Rate of reinfections per 100,000 participant days at risk"
"Estimated rate of COVID-19 reinfections per 100,000 participant days at risk, averaged for entire at-risk period, 26 April 2020 to 17 July 2021, UK"
Definition ,Number of participants at risk,Number of identified reinfections,"Estimated rate of
reinfections (per
100,000 participant
days at risk)",Lower 95% credible interval,Upper 95% confidence interval
All reinfections definition,"19,470",195,12.8,11.0,14.7
Reinfections with Ct less than 30,"19,470",48,3.1,2.3,4.2
Source: ,Office for National Statistics - Coronavirus (COVID-19) Infection Survey
Notes
1,"For the purposes of this analysis, we define reinfection as a new positive test 90 days or more after an initial first positive test which was preceded by at least one negative test, or where an individual has had a subsequent positive test following four consecutive negative tests regardless of the time since the first positive. "