Covid-19: Preliminary figures show 1.2% of people in England had infection at end of November

The UK Health Security Agency (UKHSA) has delayed the planned release of modelled, weighted prevalence data from the Winter Coronavirus Infection Study until 21 December, although the raw data show a relatively low positivity rate of 1.2% in England in the week to 29 November.The Winter Coronavirus Infection Study started on 14 November and will run until March 2024. It replaced the much larger Office for National Statistics (ONS) infection survey, which ended in March 2023.Whereas the ONS infection survey used polymerase chain reaction (PCR) tests, the new study, run jointly by the ONS and the UKHSA, relies on less sensitive lateral flow device tests. However, both studies are based on prospective random sampling of the population, so they give a good estimate of covid prevalence, including people who are asymptomatic.The ONS has released the first raw data from the Winter Coronavirus Infection Study, based on a sample of 28…
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