Legionellosis, also known as legionella infection, is related to pontiac fever and legionnaire disease, and has symptoms including coughing, fever and pruritus. An important gene associated with Legionellosis is CD40LG (CD40 Ligand), and among its related pathways/superpathways are Innate Immune System and Vesicle-mediated transport. The drugs Azithromycin and Anti-Bacterial Agents have been mentioned in the context of this disorder. Affiliated tissues include lung and bone marrow, and related phenotypes are cellular and cardiovascular system