南北アメリカ大陸の原住民はスペイン人が持ち込んだ病気のために滅んだ？

下記の記事が出ている。

　Were early Americans wiped out by diseased European migrants? DNA from mummies shows native genes vanished when the Spanish arrived in 15th century
　Daily Mail: 1 April, 2016
　http://www.dailymail.co.uk/sciencetech/article-3519372/Were-early-Americans-wiped-diseased-European-migrants-DNA-mummies-shows-native-genes-vanished-Spanish-arrived-15th-century.html