First Ebola patient diagnosed in the U.S. has died

DALLAS -- The first patient diagnosed with Ebola in the United States has died Wednesday morning at a Dallas hospital. Thomas Eric Duncan had been receiving care since he was admitted last Sunday.

Duncan came to Dallas from Liberia to visit his son and other family on Sept. 20. He fell ill and went to the hospital Sept. 25, but he wasn't diagnosed until going back with more severe symptoms Sept. 28.

This news of his death comes after his girlfriend told ABC News on the phone that she was worried.

"I want Eric to be taken care of. The medicine that he gave the other Americans that came from Africa two days ago, they didn't give him the same medicine. I don't think Americans are doing enough to save him," she said.

According to Duncan's family, he was unconscious, heavily sedated and on dialysis with kidney failure at Texas Health Presbyterian Hospital in Dallas.

Louise Troh, the woman who hosted Duncan before he was diagnosed with Ebola, says she's angry his son couldn't visit him before he died.

Troh released a statement saying she trusts "a thorough examination will take place" into Duncan's care.

On Saturday, Duncan was given an experimental drug different from the one used to treat the first two Ebola patients in America.

The anti-viral medication given to Duncan had not been tested on humans.

His family is questioning if the health system failed leading up to his death. First, sending Duncan home from the hospital when he initially sought treatment only to be admitted via ambulance days later.

Hospital officials knew all along he'd come from an Ebola-infected African country but somehow that information wasn't shared.

"The hospital did not detect this right away and that meant that he was not given the benefit of early treatment. He was sent to the community where he could spread the disease more," ABC News Chief Health and Medical Editor Dr. Richard Besser said.

Officials are now monitoring some 50 people who came in contact with Duncan while he was contagious. So far, none are showing symptoms.

The Associated Press Contributed to this report.