A five year old boy has tested negative for Ebola at a hospital in New York.
The child, who had recently returned from Guinea, was isolated after developing a fever.
Meanwhile a nurse who was threatening legal action, after being held in quarantine in neighbouring New Jersey, has been told she can now go home.
Kaci Hickox had been put into isolation, despite testing negative for the virus.
The Doctors Without Borders worker returned to the US on Friday and was promptly put into isolation at a New Jersey hospital.
She has tested free of the deadly virus, but was told she would be unable to leave for another 21 days - when the disease's incubation period ends.
Her lawyer said the order violated her constitutional rights.
American health officials say people at 'high risk' of contracting the deadly disease could be banned from going to work - and using public transport - under new guidelines from the Centre for Disease Control.
