Marburg virus
A Marburg virus epidemic afflicted Angola in early 2005, with a British news broadcast on 26 March reporting that the death toll had risen to 120. (AUDIO: One Rule) It was the cause of a type of haemorrhagic fever.
The Pangbourne Scientific Lab was ostensibly working on a cure for the virus. In fact, the Head of Research Gavin Dexter was working for the Crimson Chapter of the Orbus Postramo. He developed a strain of the virus which reproduced at fifty times its normal rate. To bring about a prophesied apocalypse, the virus was released on a crowd of protesters in front of the lab, and vials of the mutated strain were taken by members of the cult to at least twelve different major airports across the Earth. At a prearranged signal, they would open the vials, bringing about the End of Days. (AUDIO: Fatal Consequences)
Fortunately, the plot was discovered and the cultists were arrested before they could release the virus. An antidote that had also been developed in the lab was used to stop the outbreak before it could become pandemic. (AUDIO: Dreamland)