(Bloomberg) -- An American freelancer in Liberia working for NBCNews was diagnosed withEbola and will be flown back home fortreatment, the latest case of the deadly virus to be treated in theU.S.

The 33-year-old cameraman, Ashoka Mukpo, was hired Sept. 30, NBCNews said on its website today.

The case comes after a traveler from Liberia was found this weekto have Ebola in the U.S., making him the first patientdiagnosed in the country. At least three American aid workers whocontracted the disease in Africa have been evacuated to U.S.hospitals, treated and discharged.

The Ebola outbreak has been concentrated in three WestAfrican countries, Liberia, Sierra Leone and Guinea. The outbreakthere has infected more than 6,000 people and killed more than3,000 so far, according to the Centers for Disease Control andPrevention.

U.S. public health officials have been isolating and testingtravelers who return from the region with symptoms of the disease.They have downplayed the chance of a major outbreak in the U.S.,saying the country’s superior medical infrastructure would be ableto quickly isolate the disease.

Mupko had been working in Liberia for the past three years andwas diagnosed with Ebola yesterday. He was a secondcameraman for Nancy Snyderman at NBC News, who has been coveringthe outbreak in the Liberian capital of Monrovia with three otheremployees.

“We are doing everything we can to get him the best carepossible,” NBC News President Deborah Turness said in a note tostaff that was posted on its website. “He will be flown back to theUnited States for treatment at a medical center that is equipped tohandle Ebola patients.”

U.S. Quarantine

The rest of the crew have no symptoms or warning signs, and arebeing closely monitored, the media organization said.

The company will also fly them back on a private charter flightand will place them under quarantine in the U.S. for 21 days, whichis at the most conservative end of medical guidance for suchmeasures, it said.

There is no approved treatment for Ebola, though drugmakersare attempting to develop vaccines or medicines that could be usedin this or a future outbreak. Current care involves isolating thepatient so they can’t infect others, and providing supportivetreatment such as intravenous fluids and antibiotics to fightopportunistic infections.

“The doctors are optimistic about his prognosis,” NBC Newsquoted Mukpo’s father, Mitchell Levy, as saying in a message tofamily and friends.

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