A Hillsboro day care worker has tested positive for coronavirus, the Touchstone Preschool in Hillsboro announced Friday night in an emailed message to parents.

The employee, a teacher who works directly with children, had not been at the facility for the past week, the announcement said. The employee is under doctor’s supervision and the facility is now closed for at least two weeks.

“We are sending our best wishes to our teacher for a full recovery,” the day care said in a statement Saturday, confirming the case to The Oregonian/OregonLive. "Out of respect for her privacy, as well as the privacy of her family and our school community, we will not be providing further information.”

Formally called Touchstone School - Hillsboro, the day care was licensed by the state of Oregon in 2017 and has a capacity to care for up to 172 children, according to records.

Oregon’s Early Learning Division, which regulates day cares, had not publicly announced the infection as of Saturday morning. Spokeswoman Melanie Mesaros confirmed the case to The Oregonian/OregonLive.

This marks what appears to be the first public case of a day care worker becoming infected with coronavirus in Oregon. Gov. Kate Brown ordered all schools closed through April 28 but has not shut down day cares, saying they are an important resource for parents who need to work amid the global pandemic.

Earlier this week, state regulators gave day cares "more flexibility to continue serving parents doing critical work during this state of emergency,” Miriam Calderon, director of Oregon’s Early Learning Division, said in a statement Wednesday announcing the changes.

At least 115 Oregonians have tested positive for coronavirus, although only four of those have been age 17 or younger. Among those infected with the virus are a public school janitor, a retirement home employee, a health care provider and nursing home patients and staff.

Across all infections, four Oregonians have died.

Touchstone Preschool has contacted all employees and asked them to self-quarantine for 14 days from Friday, the school told parents Friday night. The facility will be closed for a minimum of 14 days and “will reassess and seek further guidance from health officials before reopening.”

The school also said it contacted families whose children were in the classrooms where the teacher taught, or shared common space, and suggested they also self-quarantine for a minimum of 14 days from Friday.

Touchstone Preschool, at 6355 N.E. Cornelius Pass Rd., will receive a “deep clean” disinfection of the entire facility, according to the note to parents.

“We profoundly regret any disruption or anxiety this causes you and your family," the school’s director wrote in the note to parents Friday night. "We will continue to monitor this situation and update you with any additional developments, as well as provide more information on our plans to reopen.”

Touchstone operates day cares in Hillsboro, Beaverton and Tigard. The company is part of a broader national network called SEG Inc., for Spring Education Group, which has 27 different affiliates, including private schools.

Separately, KinderCare, the Portland-based day care chain, said this week it will temporarily close two-thirds of its 1,500 national locations. Those that remain open will be focused on providing care to families of health care employees, first responders and other essential workers.

Shane Dixon Kavanaugh contributed to this report.

-- Brad Schmidt; bschmidt@oregonian.com; 503-294-7628; @_brad_schmidt