"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, 2 July 2020 to 9 January 2022, UK "
Definition,Number of participants at risk,Number of identified reinfections,"Estimated rate of reinfections (per 100,000 participant days at risk)",Lower 95% confidence interval,Upper 95% confidence interval
All reinfections definition,"26,528",917,20.8,19.5,22.2
Reinfections with Ct less than 30,"26,528",635,14.4,13.3,15.6
Source: ,Office for National Statistics â€“ Coronavirus (COVID-19) Infection Survey
Notes
1,"For this analysis we define reinfection as a new positive test 120 days or more after an individualâ€™s 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. "
2,"A confidence interval gives an indication of the degree of uncertainty of an estimate, showing the precision of a sample estimate. A wider interval indicates more uncertainty in the estimate."