The latest case, which brings the borough’s total since the start of the pandemic to 571, was recorded on Friday but was only revealed in figures released last night.
It now means three cases in total were confirmed in the borough last week on three consecutive days.
The data includes tests carried out in hospitals and also Pillar 2 tests, which is anyone tested at one of the mobile sites in the borough or sent a test to take at home.
The new case has seen Scarborough’s seven-day infection rate increase to 0.4 from 0.1.
Meanwhile, the mobile coronavirus testing service will be back in Scarborough and Whitby again this week for anyone showing symptoms to get tested.
The drive-through facility will set up at the Seamer Road park and ride site in Scarborough today.
Tomorrow it will be at Whitby’s park and ride facility in Guisborough Road.
It is being organised by the Department of Health and Social Care which has warned people to not just turn up but make an appointment first.
There are two ways to do this depending on which testing group you are part of.
Anyone who is showing coronavirus symptoms should register for a test on the NHS website at www.nhs.uk/conditions/coronavirus-covid-19/
People who do not have access to the internet, or who have difficulty with the digital portals, can ring the new 119 service to book.
Key workers and members of their household should register for a test on the government website.
Tests can be booked at www.gov.uk/apply-coronavirus-test-essential-workers from 8pm tonight for the Whitby site.