OMAHA, Neb. (CBSNewYork/AP) — A surgeon who contracted Ebola while working in his native Sierra Leone has died while being treated in a biocontainment unit at a Nebraska hospital, the facility said Monday.

Nebraska Medical Center said in a news release that Dr. Martin Salia died as a result of the disease.

“Dr. Salia was extremely critical when he arrived here, and unfortunately, despite out best efforts, we weren’t able to save him,” said Dr. Phil Smith, medical director of the biocontainment unit.

Salia arrived Saturday to be treated at the Omaha hospital, where two other Ebola patients have been successfully treated.

Ebola has killed more than 5,000 people in West Africa, mostly in Liberia, Guinea and Sierra Leona.

The 44-year-old Salia had been working as a general surgeon at Kissy United Methodist Hospital in the Sierra Leone capital of Freetown. It’s not clear whether he was involved in the care of Ebola patients. Kissy is not an Ebola treatment unit, but Salia worked in at least three other facilities, United Methodist News said, citing health ministry sources.

Salia, a Sierra Leone citizen who lived in Maryland, first showed Ebola symptoms on Nov. 6 but tested negative for the virus. He eventually tested positive on Nov. 10.

Meanwhile, Sen. Charles Schumer is calling on the federal government to reimburse New York City and Bellevue Hospital Center for costs related to Ebola.

Speaking Sunday, Schumer said that more than $20 million has been spent on tracking health professionals and others arriving from Ebola-stricken countries.

Dr. Craig Spencer was successfully treated for Ebola at Bellevue Hospital. He was released from the hospital last week.

The senator said President Barack Obama has requested $6.1 billion from Congress for Ebola. New York state is currently slated to receive only about $14.5 million.

“What New York City does not only affects our city, but it helps protect the whole country,” Schumer told reporters, including WCBS 880′s Ginny Kosola, on Sunday.

Schumer is also calling for the creation of a new “Ebola fund” to defray the costs for local governments who have to take similar steps in the future. A similar fund already exists to help areas fight tuberculosis.

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