Across the UK, there were 521,602 positive test results in the week to December 16, up 51% from the week before.
The average rate of infection in Lancashire as of December 16 is 488.5 per 100,000 people, an increase of 56.2% on the previous week.
At neighbourhood level, Covid-19 case rates have been published for the week to December 16.
Here are the neighbourhoods in Preston with the biggest rise in case rates in the past week.
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1. Plungington & University
Plungington & University had 645.6 Covid-19 cases per 100,000 people in the latest week, a rise of 173.3% from the week before.
2. Broughton & Wychnor
Broughton & Wychnor had 1111.4 Covid-19 cases per 100,000 people in the latest week, a rise of 137.8%from the week before.
3. Haslam Park
Haslam Park had 509.7 Covid-19 cases per 100,000 people in the latest week, a rise of 94.1% from the week before.
4. Preston Town Centre
Preston Town Centre had 575.9 Covid-19 cases per 100,000 people in the latest week, a rise of 73.0% from the week before.