The United States has ordered security agents at airports and other entry ports to screen arriving travellers for signs of ebola.
People arriving from ebola-stricken countries in West Africa could begin facing mandatory screening measures as early as this weekend.
Homeland Security Deputy Secretary Alejandro Mayorkas did not provide specifics on how the screenings would be conducted.
He said agents would observe all travellers for "general signs of illness".
Customs and Border Protection agents would also distribute fact sheets to arriving travellers that contain details of what symptoms to look for and directions to call a doctor if they become sick within 21 days, Mr Mayorkas said.
According to US media reports, the measures also call for some travellers to have their temperatures taken upon arrival.
The announcement comes just days after President Barack Obama signalled that possibility of tougher screening measures .
Mr Obama has been under pressure to act in the wake of first ebola diagnosis on American soil last week.