The Northeast
ALS clusters were recently identified in New Hampshire, Vermont, and Maine. These clusters may be tied to cyanobacterial or algal blooms in lakes, which result in the production of the neurotoxin BMAA.
Image: Wikipedia. (2010). English: A map of the Northeastern United States. Retrieved from https://commons.wikimedia.org/wiki/File:Map_of_the_North_Eastern_United_States.svg