Portuguese researchers published an article in the New England Journal of Medicine on February 4, 2016 suggesting that they have found a case in which Legionella bacteria were transmitted person-to-person. The case involves a 48-year-old man who works as a maintenance worker at an industrial cooling tower complex. He became infected with Legionella pneumophila in October 2014 and was one of the first cases involved in a cluster of cases in Vila Franca de Xira, Portugal. The man lived with his 74-year-old mother and when he developed respiratory symptoms including severe cough, she took care of him. Approximately two weeks later, the…