Uganda fears Ebola outbreak

Ugandan health officials are trying to prevent the spread of the deadly Ebola virus that recently killed a 12-year-old girl.

Early indications, however, point to it being an isolated case, the Wall Street Journal reports.

Of the more than 30 people tested who had close contact with the girl, none of them have yet tested positive for the virus, health officials said, though the incubation period when Ebola can appear has yet to run its course. The incubation period runs from seven to 14 days. The girl died May 6 in a small town around 45 miles outside Kampala, Uganda's capital, the Wall Street Journal reports.

"All of [the girl's close contacts] are under suspicion, but [another case] hasn't been confirmed," James Kakooza, the state minister of health, said, according to the Wall Street Journal. "Maybe by the end of the week we'll be able to know and confirm [if there are other cases]. We are down there and trying to find out what happened."

The most recent Ebola outbreak in Uganda was in 2008. Individual cases do not always lead to outbreaks, as one case in 1977 never spread.

The most recent case caused concern because the girl was close to populous Kampala.

"That area, some people come from northern region, some from the west," Kakooza said, the Wall Street Journal reports. "It has a lot of traders who come from different parts of the country, even southern Sudan. And these are diseases that people can move along with. You can't know who has it until you verify the origin."

Ebola hemorrhagic fever was first identified in 1976 near the Ebola River in the Democratic Republic of the Congo where it killed 250 people in 1995. Over 400 people were infected and 224 died from the virus in 2000. Nearly 40 people were killed during the incident in 2008.