The floating mountains of Pandora are one of features of The World of Avatar, opening May 27 at Disneyâs Animal Kingdom. On the Naâvi River Journey, guests will ride in canoes on a sacred river through a bioluminescent rainforest ending with an encounter with a Naâvi shaman.
1 Types: Variola major, or smallpox, has a death rate of 30%. 2  Variola minor, or alastrim, is a milder form of the virus with a death rate of 1%. 3  Four types of variola exist: classic, hemorrhagic, malignant, and modified.
Ordinary variola major: The most common form, which accounts for more than 90% of cases and has a fatality rate of approximately 30% among unvaccinated individuals, and 3% for vaccinated individuals(8). The cause of death is usually bronchopneumonia, although in about 3% of cases, fatal haemorrhages occur.