A U.S.-contracted medical charter flight left Cartersville, Georgia, Thursday to evacuate two American charity workers in Liberia infected with Ebola hemorrhagic fever, a source told CNN.

A CNN crew saw the airplane, a long-range business jet, depart shortly after 5 p.m. ET. The plane matched the description provided by the source, who spoke on condition of anonymity.

It was not immediately known when the two Americans -- identified as Dr. Kent Brantly and Nancy Writebol -- would arrive in the United States, or where the plane would land.

At least one of the two will be taken to a hospital at Emory University, near the headquarters of the U.S. Centers for Disease Control and Prevention in Atlanta, hospital officials told CNN's Dr. Sanjay Gupta.

Brantly and Writebol are described in stable but grave condition, with both reportedly taking a turn for the worse overnight, according to statements released Thursday by the faith-based charity Samaritan's Purse.

Experimental serum

The news follows reports that an experimental serum was administered to Writebol. Only one dose of the serum was available, and Brantly asked that it be given to his colleague, said Franklin Graham, president of Samaritan's Purse.

With word of the experimental serum, there were more questions than answers: What is it? Why was there only one dose? And why was it only made available to the American charity workers?

Samaritan's Purse said it did not have any additional detail about the serum.

There is no known cure or vaccine for Ebola, which the World Health Organization says is believed to have infected 1,323 people in the West African nations of Guinea, Liberia, Sierra Leone and Nigeria between March and July 27.

Source: http://cnnmobile.com/primary/fullarticle?articleId=cnn/2014/07/31/health/ebola-outbreak&pageSize=10&category=intl

I love America.....though they may be the test objects...and possible vaccines or cure could be tried on them....still better than abandoned.

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What else other than becoming a case study and a lab rat.

macsika: What else other than becoming a case study and a lab rat.

Better than abandon to die.

Americans actually have nothing to fear. Go on to their blogs and social sites to see for yourself. They believe it will only exist in 'third world' countries coz they, as one of the 'first world' countries have resources to combat such diseases. I don't blame them tho.

braine: Americans actually have nothing to fear. Go on to their blogs and social sites to see for yourself. They believe it will only exist in 'third world' countries coz they, as one of the 'first world' countries have resources to combat such diseases. I don't blame them tho.

You right though.