In June 2014 Minnesota health officials investigated an outbreak of tetrodotoxin poisoning linked to consumption of dried puffer fish (also known as globefish). The fish was purchased during a trip to New York City and consumed by siblings, ages 30 and 33. They were treated at the Hennepin County Medical Center Emergency Department for symptoms of oral paresthesias, weakness and dyspnea. Two other people who were friends of the patients consumed the fish and experienced mild symptoms. Samples of the fish were sent to the FDA for chemical and genetic analysis. Genetic analysis confirmed it was puffer fish and chemical analysis determined it was contaminated with high levels of tetrodotoxin. Investigators were unable to determine the original source of the product.