Thirteen of the dead -- more than half of the fires' reported victims -- come from Biobio, which, like Nuble and Araucania, is home to extensive forests as well as farms that grow grapes and other fruit for export.
Some 260 fires are active across the parched region, interior ministry officials said on Sunday, with 28 of them considered especially dangerous.
Nearly 1,500 people have fled to area shelters. At least 26 of the 970 injured are listed in grave condition at local hospitals.