With half of its team isolating, Mrs Salisbury's Tea Rooms in Maldon, Essex is closed until Saturday.
Co-owner Mike Bloomfield says with five people, including himself, having to stay at home, there were not enough "to be able to run a good enough service for customers".
"Luckily everybody is negative [for Covid-19] and doing fine at the moment but we still have to do what we have to do and isolate," he says.
"What we don't want to do is risk more people getting pinged and for this to go on for longer, so we thought the best option for us would be just to close for the week.
"Hopefully we can open up again on Saturday, all being well and nobody gets any symptoms."
He says he is "gutted" but "not angry". pg slot
"We've got to do the right thing for the health of both the staff and the customers, but it is really gutting because we were getting ready to open our summer garden," he says.
"[It] would have been the perfect time right now in this lovely weather so it's just frustrating."