The only common thread in the ongoing investigation of two cases of Legionnaires’ disease in Kennewick, Washington is a Gold’s Gym membership. Two women in their 70s and 80s were treated in the hospital this month for their illnesses with Legionnaires’ disease, and have since been discharged and are now recovering. As the investigation is still in the early stages, the cases have not been officially linked to the Kennewick Gold’s Gym as the source, but given the commonality, the gym is being investigated as possibly being responsible for the illnesses of these woman. The gym has closed down the…