A health care worker at a hospital in Texas has tested positive for Ebola after a preliminary test.
The hospital said in a statement that further testing will be conducted by the Centers for Disease Control and Prevention in Atlanta.
Texas Health Presbyterian Hospital is where Thomas Eric Duncan, the first person diagnosed with Ebola in the United States, died on Wednesday.
Health Authorities say they're broadening their team in Dallas and are working with extreme diligence to prevent further spread.
John F Kennedy Airport in New York became the first of five airports in the United States to start new health screenings for travellers arriving from West African countries hit by the ebola outbreak.
Passengers have had their temperatures taken and are being asked to fill out a questionnaire.
Director at the US Centers for Disease Control and Prevention is Dr. Martin Cetron:
