An employee at a Newmarket grocery store has coronavirus.

“One of the team members at John’s No Frills (50 Davis Drive) in Newmarket has recently tested positive on a presumptive test for COVID-19,” the store said in a Facebook message posted April 21.

“We understand that you may have questions and want to assure you we take your safety, and the safety of our team, very seriously. Please note, while we just learned about the positive diagnosis, the team member has not been in the store since April 18th.”

The store is undergoing a “thorough deep-clean and sanitization” and is expected to open April 22 as usual, the post said.