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More than 100 people have died from the latest Ebola outbreak in West Africa. With no cure or vaccine, it is one of the most deadly of viruses, killing between 60 to 90 percent of those infected. Heath officials in Conakry, the capital of Guinea, have set up isolation centers and are screening at the airport.

Passengers with flu like symptoms -- fever, diarrhea, or joint pain -- aren’t allowed to fly.

“It's probably one of the more complicated outbreaks because it is occurring in a very densely-populated urban area, unlike previous outbreaks,” he said by phone from Conkary, which has a population of 2 million.

Dr. Jagatic described it as the biggest known Ebola outbreak an urban area.

Health officials do not expect the virus to go global and stress that Ebola is not easy to catch, requiring direct contact with an infected victim’s bodily fluids.