An Ebola outbreak that has been slowly burning its way through the Congo has gone international with a death across the border in Uganda (archived). The self declared "experts" have been insisting for more than a year that they are positioned to "contain" the outbreak through ring vaccination and other measures. These measures have had limited success for reasons related to the local culture.
A related hemorrhagic fever affecting porcine populations managed to escape the dark continent and is inflicting grave damage on China's swine herd (archived). Prices of pork and other meats on the international market have spiked in response as containment efforts don't seem to be doing much containment at all.
The international "experts" are pointedly not calling for strict biological controls on anything leaving Africa.