The first person to be diagnosed with Ebola within the US has died, Texas hospital officials have said.
Thomas Eric Duncan, 42, who caught the virus in his native Liberia, was being treated with experimental drugs in isolation in a Dallas hospital. Earlier the US announced new screening measures at entry points to check travelers for symptoms of the virus.
It has killed 3,865 people, mostly in Liberia, Sierra Leone and Guinea, in the worst Ebola outbreak yet.
“It is with profound sadness and heartfelt disappointment that we must inform you of the death of Thomas Eric Duncan this morning at 7:51 am,” a spokesman said in a statement.
The news came shortly after US Secretary of State John Kerry urged all nations to boost their response to combat the virus.
“More countries can and must step up,” he said in a joint press conference with his British counterpart Philip Hammond.