Five US airports will begin screening this weekend the temperatures of passengers arriving from West Africa as the United States ramps up its response to a deadly Ebola outbreak, officials said Wednesday.

“The vast majority of people” coming from Guinea, Liberia and Sierra Leone — the three countries hit hardest by the epidemic — will be screened, White House spokesman Josh Earnest said.

The airports implementing the measures are John F. Kennedy International in New York, Washington Dulles International, Chicago O’Hare International, Hartsfield-Jackson Atlanta International and Newark Liberty International in New Jersey.

In earlier reports, the Washington Post, quoting Federal officials, that the screening will start this weekend.

CNN, also citing anonymous sources, said temperatures would be taken of travellers from a so-called “Ebola zone,” including Guinea, Sierra Leone, Liberia and Nigeria.

NBC News added that travellers would be asked to fill out questionnaires as well

The first Ebola case on American soil was Liberia’s Thomas Eric Duncan, who died early today. He flew from Liberia to Texas to visit family, arriving in Dallas on September 20. He began feeling sick four days later, but was not hospitalized until September 28.