The Babbelonian Plague was an ancient and deadly strain of protozoan that first emerged during the Babbelonian Empire, and returned just before the High Penguin Confederacy. It's death toll was 300,000 in the first two weeks of its emergence. The plague affected every type of penguin native to Antarctica, but did not affect High Penguins, so it is thought that this absence of resistance enabled them to gain rule of the continent. A vaccine was developed in 1910.