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.
Flu viruses come in three basic types: A, B and C. They may also be classified into flu subtypes. Flu types A and B cause most cases of flu with the typical symptoms of aches, fatigue, coughs and fever. Type C usually causes less severe symptoms. Flu viruses are always evolving, and different types are more common at different times.