Scientists at the University of Michigan, including Santa Fe Institute External Professor Mercedes Pascual, are researching the cycles of the infectious disease cholera by studying less dramatic, mild infections lurking in large numbers of people. Their findings will appear in Nature Magazine. Their goal was to understand the patterns of cholera, particularly the impact of infection-induced immunity on the dynamics of cholera outbreaks. Since it is difficult to get very sick from cholera, there are a lot of people who are walking around with the disease in high infection areas such as Bengal, and these researchers were interested in studying the consequences of this. Their findings showed that many more people are being exposed to the bacteria than are getting serious infections or dying, and that individuals with mild infections are losing their immunity quite quickly.

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