SANTA FE, N.M. (AP) — Gov. Michelle Lujan Grisham tested positive for COVID-19 on Thursday morning and was receiving an antiviral drug treatment.

Lujan Grisham said in a statement that she was experiencing mild symptoms and is working in isolation from the governor’s mansion in Santa Fe.

It was the first positive coronavirus test for the 62-year-old Democratic governor and former congresswoman. Lujan Grisham says she has been fully vaccinated for COVID-19, including two booster shots.

“I am very grateful to be experiencing only mild symptoms,” she said in a statement. “Per medical guidance, I have also started a course of the antiviral Paxlovid.”

The governor last tested negative for COVID-19 on Aug. 24. People in close recent contact with the governor were notified.

Lujan Grisham spokeswoman Nora Meyers Sacket says the governor traveled to Colorado on Monday and Tuesday for campaign-related activities.

Lujan Grisham is vying for a second term in the November election against Republican nominee Mark Ronchetti, a former television meteorologist.