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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5. Ingol
Ingol had 610.9 Covid-19 cases per 100,000 people in the latest week, a rise of 71.4% from the week before.
6. Lea & Marina
Lea & Marina had 663.4 Covid-19 cases per 100,000 people in the latest week, a rise of 69.2% from the week before.
7. Cadley & College
Cadley & College had 485.8 Covid-19 cases per 100,000 people in the latest week, a rise of 65.2% from the week before.
8. Fulwood
Fulwood had 716.4 Covid-19 cases per 100,000 people in the latest week, a rise of 60% from the week before.