The first visualization is a world map showing the rate of MS by country population. Compare Garry's map with the Atlas of MS on the MSIF site.
The second visualization is the same information above in the form of a tree map.
Check his web site, Garry's Blog for more.
Garry used IBM's Many Eyes to create these visualizations. To have a closer look, visit here. While on that page, click on the data file to see the actual numbers provided. There were many instances where there was no information reported.
Thank you, Garry, for helping us become aware of the fact that there are so many MSers in so many places. We are not alone.