However it was approved, three frozen vials of ZMapp, a drug being developed by Mapp Biopharmaceutical, were flown to Liberia and arrived the morning of Thursday July 31.
The serum needed eight to 10 hours to thaw.
Brantly, who had been sick for nine days already, reportedly had asked that Writebol receive the first dose, as he was younger and thought he had a better chance of surviving. (It's unclear from the CNN story why the doses apparently were not all ready at the same time.)
But his condition worsened as the first dose thawed, and CNN reports that he told his doctors, "I am going to die."
He asked for the first dose and had it given to him through an IV. According to CNN's source, within an hour, he was able to breathe better and a rash on his body started to fade. The next day he was able to shower without help before boarding the air ambulance that flew him to Atlanta.
Writebol reportedly didn't respond as well to the first treatment she received, and had to be given the third vial of serum. Her second treatment seemed to improve her condition, according to CNN, and stabilized her enough that she's expected to fly to the U.S. on Tuesday, August 5.