Washington (CNN) US officials are trying to identify people who came in contact with a worker at Los Angeles International Airport who tested positive for coronavirus, acting Customs and Border Protection Commissioner Mark Morgan told reporters Thursday.

Morgan's comments come a day after Department of Homeland Security said the worker, a department contractor, had not been at work for more than a week before developing symptoms. It was unclear whether the virus was contracted from travelers or via community spread. Morgan did not offer additional details on the steps being taken to trace people in connection to the person who tested positive for coronavirus. Customs officers work at the airport doing the initial screening of passengers.

"Every situation is unique and independent, and again, working with CDC, working with the health care providers, I'm very confident we are taking the appropriate steps in response to that incident to include contact tracing, so we're going to do that; we're going to do all the appropriate contact tracing," he said.

Morgan said that his "first concern" is the CBP workforce, adding that the agency has the protective gear it needs and has communicated to employees.

"There's a lot of misinformation out there. And I think it's important that our employees understand," he said.

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