In the 1800s, malaria was extremely common within the United States, with over 1 million cases reported during the Civil War alone. This map depicts deaths from malaria in 1870—10 years before the malaria parasite was even discovered. Click here for the map [1].
Links:
[1] http://www.the-scientist.com/article/display/57476/
[2] http://twitter.com/share