CHEYENNE, Wyo. (AP) — A woman infected with Wyoming's first known case of the coronavirus has been improving while staying in voluntary isolation at home, health officials said Thursday.

“She had fairly mild to moderate symptoms,” said Dr. John Addlesperger, chief medical officer at Sheridan Memorial Hospital.

The woman from Sheridan County in northwest Wyoming recently traveled inside and outside the state but kept within the U.S. She tested positive for the COVID-19 virus late Wednesday, according to the Wyoming Department of Health.

“The patient’s close contacts were identified and will be quarantined at home and monitored for any symptoms. Everyone has been quite cooperative,” department spokeswoman Kim Deti said in an email Thursday.

Measures to limit the spread of the virus in Wyoming intensified as the University of Wyoming announced it would extend spring break, which begins Friday, until March 30.

“The extended break is designed to provide time for faculty to better prepare for online-only teaching, should that be necessary,” acting President Neil Theobald said in a release.

Wyoming should consider carefully whether large events bringing together more than 250 people should occur, Gov. Mark Gordon said at a news conference.

“We want to be proactive in our approach and I encourage anyone planning large events to contact their county health officials,” said Gordon, a Republican.

Soon after, the Wyoming Democratic Party announced it was canceling in-person voting at its April 3 presidential caucuses. Voting would occur by mail and drop-off of ballots, party Chairman Joe Barbuto said.

“Our priority is ensuring that people are healthy and safe. Holding public events right now would put that in jeopardy, so this is the responsible course of action,” Barbuto said in a release.

Meanwhile, the Wyoming High School Activities Association announced it was canceling this weekend's Class 3A and 4A state basketball tournaments in Casper and the state's speech and debate tournament in Green River.

The Wyoming Public Health Laboratory in Cheyenne began testing March 5. Since then, 16 people in the state have tested negative for the virus that causes COVID-19. Symptoms include fever, cough and shortness of breath.

For most people, the new coronavirus causes only mild or moderate symptoms, such as fever and cough. For some, especially older adults and people with existing health problems, it can cause more severe illness, including pneumonia. The vast majority of people recover.

People in Wyoming who think they need a coronavirus test should consult a healthcare provider, Deti said.

Wyoming health officials were prioritizing testing for people who have recently traveled internationally, had contact with somebody with laboratory-confirmed COVID-19 or who were hospitalized with a severe illness.

People over 65 and those with chronic illness and/or compromised immune systems also were priorities.

Wyoming health officials expected to have sufficient capacity to continue testing people who meet the priority-testing criteria. The department-run laboratory has hundreds of test kits, Deti said.

"We have enough supplies to meet demand for some time to come. We're in pretty good shape for now," she said.

The University of Wyoming has canceled study abroad in China and South Korea this summer and prohibited university travel to or through those countries along with Iran and Italy.

Students and university personnel returning from those four countries have been told to self-isolate for 14 days to make sure they do not have the COVID-19 virus.

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