Updated at 5:30 p.m.: Revised to include information on Dallas County’s response to the Collin County case.

A Frisco resident who was tested for the coronavirus has received a “presumptive positive” result, Collin County health officials announced Monday.

Collin County Judge Chris Hill said the man, who is in his 30s, recently traveled to California, which has the second-most coronavirus cases in the U.S., behind Washington state.

He and his family are in self-quarantine at their home, Hill said, and the man has not required hospitalization for his symptoms.

Frisco ISD said in a message to parents that the man is the father of a child at Tadlock Elementary School.

The district said the school would undergo “special cleaning" over spring break this week. It also said it’s working with Collin and Denton counties’ health departments to “contain further exposure to our community” when students return to school next week.

A case is considered a presumptive positive when a patient has received a positive result from a public health laboratory but is awaiting the U.S. Centers for Disease Control and Prevention’s confirmation.

“For public health purposes, a presumptive positive result using the CDC test is treated as a positive,” the agency said in a written statement earlier this month.

Collin County Health Care Services is awaiting further results to confirm the positive test and is monitoring the man’s family. Hill said the secondary results from the state lab will be ready by Tuesday.

The department also is working to identify anyone the man may have come into contact with while he was infectious. The county health care staff will notify anyone who is found to have had close contact with him.

Travel to California

The man traveled to California on a work trip to Silicon Valley in late February and returned early this month, Hill said.

The man’s health insurance provider directed him to a private lab for the COVID-19 test when he was feeling ill, Hill said. When that test came back positive over the weekend, state officials from a testing lab in Dallas retested him to confirm the results. They also will test the man’s family for the virus.

“This guy did exactly what we coach all our residents to do,” Hill said.

He did not release any details about where the man had been since returning to Texas but noted that he probably did not visit a Frisco ISD campus.

“We do expect everyone in Collin County to have an elevated level of concern,” Hill said. “[But] the chances of any particular individual getting the coronavirus are relatively low in the community.”

Testing for the virus

Although Dallas and Tarrant counties have testing capabilities for the new coronavirus, Collin County does not have its own lab to test for COVID-19. Tests ordered by physicians there are done through private labs.

LabCorp, one of the companies performing tests for Collin County, could not say how many COVID-19 tests had been performed and where the specimens had come from, according to a spokeswoman.

Dr. Philip Huang, Dallas County’s health director, said the Collin County case does little to change the work his team is doing to prepare for a severe outbreak.

“We’re still in the same mode of containment,” he said. “But having it close to home gives us more heightened awareness. We’re trying to make sure everyone is taking it serious" but not panicking.

Dallas County Health and Human Services is leading daily calls with first responders and hosting meetings among school superintendents and elected officials. The department also is working to share CDC guidance on the disease, including an update that suggests that older people should minimize the amount of time they spend in public.

Anyone in Dallas who believes they may have COVID-19 is urge to contact their doctor or the county health department at 972-692-2780 for guidance. People without health insurance should contact a hospital’s emergency room, the city said.

Tarrant County Public Health spokesman Richard Hill said he doesn't yet have a number for how many COVID-19 tests have been performed there.

He said the county would continue working to prevent the spread of respiratory illnesses.

“Right now, the overall risk as far as COVID-19 is concerned is low,” he said.

Frisco and Plano ISDs, which are on spring break this week, have asked students and employees who travel to countries that have been hit hard by the coronavirus to self-quarantine for 14 days when they return to the U.S.

Preparations

Frisco Fire Chief Mark Piland, who is also the city’s emergency management coordinator, said the city has been preparing for more than two months for the possibility of a COVID-19 outbreak.

He said that EMS workers and dispatchers are screening patients for signs of the virus and that the fire department has the equipment it needs to transport patients with infectious diseases.

“We have people that have all sorts of communicable diseases that we transport, so it’s nothing new to us," Piland said. “We’ve been prepared for this.”

Frisco ISD said in a written statement that its custodial department “follows strict guidelines and uses hospital-grade products to clean and disinfect school buildings daily.”

“In addition, the FISD transportation department sanitizes all buses routinely,” the statement said. “A special team is also utilized throughout the district in times of heightened health concerns to further prevent the spread of communicable diseases.”

The district has also said it is providing hand-sanitizing stations in every classroom.

Staff writers Brandi Addison, Nic Garcia, Hayat Norimine and Corbett Smith contributed to this report.