There are no confirmed cases of the new virus from China in Texas, Dallas County’s top health official said Tuesday – four days after reports surfaced that a person was being tested locally for the respiratory illness.

“The main message for the general American public, for our community: The health risk is still considered low at this time,” said Dr. Philip Huang, director of the county’s health department.

Huang’s presentation at the county commissioners’ regular meeting followed news on Friday from Assistant City Manager Jon Fortune that a person was being tested for the virus at Parkland.

Huang did not comment during his presentation on whether an individual at Parkland Memorial Hospital had been tested. And he declined to answer any questions about the reported patient at Parkland or whether this team has performed any test. Rather, he said in an interview with The Dallas Morning News, the county health department is consulting “a lot of different hospitals and communities.”

Huang stressed the seasonal flu is still the more pressing health risk, and urged individuals who have not yet received an immunization to do so. So far, 15 people have died from the flu in Dallas County. By comparison, there are fewer reported cases of Americans with the coronavirus, which causes a respiratory illness.

The new virus was first detected late last year in the Chinese city of Wuhan. According to the World Health Organization, the virus can cause a runny nose, sore throat, cough, and fever. The disease, which can also lead to more severe pneumonia or breathing difficulties, can be fatal in rare circumstances.

Health officials can use a variety of tests to determine whether someone has contracted the virus, including a nose swab and testing a person’s phlegm.

As of Tuesday, more than 20,000 people in Asia have contracted the virus, according to the World Health Organization. And about 425 people have died, all but one in China.

In the U.S., 260 people have been tested for the virus with only 11 positive cases, according to the Centers for Disease Control and Prevention.

Many flights between mainland China and Dallas have been canceled through March 27. However, some flights carrying passengers who have traveled in China within the last two weeks may be rerouted to DFW International Airport for enhanced health screening to check for coronavirus, the Associated Press reported.

On Tuesday, American Airlines suspended flights between the U.S. and Hong Kong until Feb. 20.

Tarrant County health officials, who have jurisdiction over the airport, were fleshing out their plans to track the virus.

The department said in a statement that the CDC would perform screening assessments and Tarrant County would then monitor patients.

Travelers from China who live in the area and are not designated a high risk will be sent home and remain in isolation. If they are not local residents and are not deemed high risk, they will be sent to their final destination where local health authorities will be notified.

Tarrant County has not yet identified where it will isolate individuals deemed a high risk. And they will not share that location when they do, the statement said.

In Dallas, Huang said residents who have recently traveled to China and are experiencing flu-like symptoms should call their doctor and “let them know the situation.”