Dallas County health officials announced Tuesday they are monitoring two health care workers for Ebola, although they don’t show any symptoms of the virus.
The Dallas County residents were in Sierra Leone, one of the countries affected by the Ebola outbreak.
“They are currently asymptomatic and have been instructed to remain off public transportation or avoid large congregate settings activities. Failure to comply can result in a control order,” county health officials said in a statement.
The workers are not allowed to care for patients during a 21-day monitoring period, which ends Dec. 1.
Tuesday’s news comes after three Ebola patients were treated in Dallas in recent weeks. On Friday, the Ebola monitoring period ended for people who were in contact with the three Ebola patients.
The first Ebola patient, Thomas Eric Duncan, traveled from Liberia to Dallas in late September. He was diagnosed with Ebola on Sept. 30. Duncan died in October.
Amber Vinson and Nina Pham, Presbyterian nurses who treated Duncan, were infected with Ebola. Both nurses have recovered and have been declared free of Ebola.
