I love this map. These folks have done some excellent work. This map and the data behind it were compiled by Dr. Henry Niman, a biomedical researcher in Pittsburgh, Pennsylvania, using technology provided by Rhiza Labs and Google. The map is compiled using data from official sources, news reports and user-contributions and updated multiple times per day. Rhiza's web-based mapping product, Insight, is helping Dr. Niman get official and unofficial data into the tracking system faster while giving researchers and the public many options for viewing the data in a useful and understandable way.