一名澳大利亚护士接受埃博拉病毒检测

An Australian nurse is undergoing medical tests after showing possible signs of Ebola, as the international community continues efforts to limit the outbreak of the virus.

Queensland state chief health officer Jeanette Young says the 57-year-old woman developed a "low-grade fever" shortly after returning from Sierra Leone, where she was working with Ebola patients.

Test results are expected to be released Friday. Young stressed that even if the woman does have Ebola, there is no reason for the public to be concerned about an outbreak.

The development comes a day after the first Ebola patient diagnosed in the United States died in Dallas, Texas following ten days of treatment.

Thomas Eric Duncan arrived in Dallas last month (on September 20) from his native Liberia, the epicenter of the West African Ebola outbreak.

President Barack Obama says fighting Ebola is a national security priority. He said: "What's true is we have unique capabilities that nobody else has and as a consequence of us getting in early building that platform we're now able to leverage resources from other countries and move with speed and effectiveness to curb that epidemic"

The president also says new screening measures for travelers coming from Guinea, Liberia and Sierra Leone will be put in place at five major U.S. airports.  

Customs officials will quiz passengers about their travel in West Africa, take their temperatures, and observe them for other signs of Ebola.

Anyone with a fever or showing any other symptoms will be passed on to medical authorities for a detailed evaluation.