Their ice is made with the same contaminated water you never know because actinobacteria is found in unclean or unsanitary water. I wonder if that's what's responsible for causing Montezumas revenge could be. Anything is possible. I know a village in Senegal had an epidemic fever break out because of t. Whipplei a baker and his family were baking and selling bread to the whole village and all the people would buy it and eat it and here all the bread was contaminated with t. whipplei because of the baker and his family who initially had the disease. Google it it's pretty crazy and scary.