A Texas nurse infected with Ebola after caring for a Liberian man who died from the disease no longer has the virus, according to her family.

A statement from Amber Vinson's family says the 29-year-old will stay in hospital for further treatment, but the disease appears to have been eradicated.

US media outlets report she is to be transferred to a different unit.

Amber Vinson was the second of two nurses diagnosed with Ebola after caring for Thomas Eric Duncan, who died from the disease in Texas.

The statement from Vinson's family states: “we are overjoyed to announce that, as of yesterday evening, officials at Emory University Hospital and the Centers for Disease Control are no longer able to detect virus in her body. She has also been approved for transfer from isolation. Amber remains under treatment within Emory’s Serious Communicable Diseases Unit.”

The hospital and CDC have yet to confirm that Ms Vinson is free of the disease, however. 

On Tuesday it was announced that a second and conclusive test showed that a Spanish nurse infected with Ebola is completely clear of the virus.

Teresa Romero was admitted to a Madrid hospital earlier this month. She was the first known person to contract the disease outside of West Africa in the latest outbreak, which has killed more than 4,500 people in Africa.

It had been reported at the weekend that she had made a full recovery, but doctors confirmed this week that they believe all the World Health Organisation's criteria to declare the patient clear of infection had been met.

Yesterday, new rules came into effect in the United States for people travelling from west African nations hit hardest by Ebola.

Those arriving from Guinea, Liberia or Sierra Leone will have to fly through the five US airports already screening passengers for the disease - New York’s JFK, Newark, Dulles, Atlanta and Chicago.