First time accepted submitter ecorona writes "This Google Maps mashup was published in Science (paywall warning) this week. It shows genetic risk for multiple diseases distributed across the globe. It's easy to follow the migration path and see which diseases increase/decrease in risk along human migration paths. Click on the populations to see the relative risk of the selected disease for each population. You can pick your a disease and see which populations are more susceptible. The article is behind a paywall, but the website is free to use."
On a similar note, an anonymous reader points out
a British research project that "used Twitter to track and map flu-like illnesses across the U.K. to determine if epidemics were emerging. The research culminated into an online visual tool, the Flu Detector
, that maps tweeted flu rates in several regions across the U.K.