A fourth case of coronavirus has been confirmed in Waterloo region, public health officials revealed Friday.

This case involves a woman in her 50s who is thought to have acquired the virus while travelling in France.

"She developed symptoms upon her return, for which she was tested at Grand River Hospital," said acting medical officer of health Dr. Hsiu-Li Wang Friday.

The woman was expressing mild respiratory symptoms and has been released from hospital and is self-isolating at home, Wang said.

"Public health is monitoring her, as well as close family members who are not experiencing any symptoms at present."

Three previous cases of coronavirus have been reported in the region.

An update on Friday morning indicated one of those individuals, a man in his 40s who got the virus in Las Vegas, was being hospitalized. Initial reports from public health on Thursday said the man had been sent home to self-isolate.

"Later on that day he returned to a hospital setting as his condition became more serious," Wang said.

She adds the man is currently in stable condition.

For the latest on coronavirus cases in Waterloo region, you can visit the public health website, here.