The cumulative rate of infection in Mansfield, which covers the whole pandemic, stands at 29,928 cases per 100,000 people, higher than the England average of 28,149.
Cases in Ashfield rose by 60 in the last 24 hours to a total of 36,968, giving an infection rate of 28,805 cases per 100,000 people.
In Newark & Sherwood, cases rose by 51 to 33,393, an infection rate of 27,121, while postive tests in Bolsover district rose by 31 to 22,948 and an infection rate of 28,225.
If one person tests positive for the virus more than 90 days after the first infection, two infection episodes will be recorded, according to the UK Health Security Agency.
Across the UK, the number of recorded cases increased by 40,876 over the period, to 18,695,448.
People with a positive lateral flow test no longer need to take a follow-up PCR test to confirm the result unless they have coronavirus symptoms.
Six Covid-related deaths were recorded across the four districts in the latest 24-hour period.
The dashboard shows three more people died in Ashfield, two in Bolsover and one in Newark & Sherwood, taking the death tolls to 405, 250 and 271 respectively.
The death toll in Mansfield remains unchanged at 369.
They are among 12,813 deaths recorded across the East Midlands.
The figures also show 60,143 of people in Mansfield have received a booster or third does of a Covid-19 vaccine by Monday, February 21, 60 per cent of those aged 12 and over, based on the number of people on the National Immunisation Management Service database.
A total of 78,953 people, or 78 per cent, had received two jabs by that date.
In Ashfield, 71,468 people, 64 per cent, have received a booster, while in Newark & Sherwood, it is 74,620 people, or 66 per cent.
In Bolsover, 48,290 people, 66 per cent of those aged 12 and over, have received a third Covid jab.
Across England, 66 per cent of people aged 12 and above had received a booster.