Coronavirus (covid-19) Infection Survey - 19 October 2022

19th October 2022

The latest estimated rate of coronavirus (COVID-19) reinfections on 29 September 2022 was 41.6 per 100,000 participant days at risk (95% confidence interval: 40.8 to 42.5).

Of all identified reinfections, 92.3% occurred during the period when the Omicron variants were dominant.

People living in larger households or living with a long-term health condition were more likely to be reinfected.

The estimated rate for COVID-19 reinfections has remained high since the Omicron variants became dominant
There has been a large increase in the rates of reinfections since the Omicron variants became dominant. The rate was 12.6 per 100,000 participant days at risk (95% confidence interval: 11.7 to 13.6) on 20 December 2021 and has since risen, remaining consistently higher than 40 per 100,000 participant days at risk over several months. There was a slight decrease since April 2022, likely because of varying levels of protection provided by past infections, including with Omicron BA.1 and BA.2, and changing background infection levels among the population.

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