Increasing Outbreaks (IMAGE) Brown University Caption This is a global map plots cumulative outbreaks of human infectious disease since 1980. Darker shaded nations had more outbreaks. Credit Brown University Usage Restrictions With credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.