These early outbreaks in Southeast Asia had fatality rates ranging from 10 to 50 percent, but as more was learned about the disease, these rates dropped.
Kagu - Aasias oli nende esmaste puhangute aegu suremus 10 kuni 50 protsenti, ent kui haigust põhjalikumalt tundma õpiti, hakkasid need protsendid kahanema.