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Amber cold health alert issued for North East and West, and Yorkshire and the Humber. Yellow cold alert issued the rest of England.

The amber alert affects North East, North West and Yorkshire and the Humber. The yellow alert affects the rest of England. Both alerts are in place from 12pm Mon 17 Nov until 8am Sat 22 Nov. Please see the Weather health alerts page.

BackEntry title:

Correction to COVID-19 case rates data

Last updated on Monday, 28 April 2025 at 04:02pm

Entry category: Data issue
Entry description:

As the result of a systematic error in reference data containing population estimates, 7-day rolling-average COVID-19 case rates were incorrectly calculated. The error appeared on 10 April and was resolved on 28 April, with the corrected metrics released at 4pm.

During this period, all case rates appeared as half their expected value. This affected users interacting with the Case rates by specimen date (7-day rolling average) and Case rates by specimen date and sex (7-day rolling average) charts, downloading the corresponding data or accessing these metrics using our API or by other automated means.

Overall trends in COVID-19 case rates remain unaffected. Other COVID-19 metrics including case numbers, testing numbers, positivity, hospital admissions and deaths also remain unaffected.

We have taken steps to improve our data quality processes to help prevent similar issues occurring in the future.

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