SEO efforts by various companies and in part because some of them aren't accurate as they could be. (For more on the problems with some infographics, read Pretty Graphic, Bad Data). Last week, I found one from GOOD that seems to break that pattern.
Outbreak: Deadliest Pandemics in History is a nice infographic depicting the approximate death tolls related to various diseases throughout history. The infographic also includes approximate dates for the outbreak of each disease to the eventual eradication of each disease. You can view the infographic here or in the Zoom.it image below.
Applications for Education
One thing that would make this infographic better would be hyperlinks to more information about each pandemic. Researching the causes and eventual end to each pandemic could be a good assignment for a health education class or a history class.
H/T to Cool Infographics.