<prompt> Leginonnaire disease cause?Respiratory diseaseU.T.IRetroperitoneal fibrosisAcute gastroenteritis  <response>: Legionellosis Atypical pneumonia Fever, muscle pain, headache Bacterium found in AC fresh water Spread by breathing Diagnosis By urinary Antigen test Sputum culture Treatment - Fluroquinolones, Azithromycin or doxycycline Culture for legionella - BCYE Buffered charchol yeast Extract with Fe Cysteine 