<prompt> Coccobacillus grown in BCYE medium isLegionellaStreptobacillusGardenellaNeisseria  <response>: Legionella pneumophila:General characteristicsCultural characteristicsGram negative pleomorphic rodsMotile , non-capsulatedGrowth requirements - Cysteine and IronNo man to man transmissionNo animal reservoirsLegionella- widely distributed in natural water sources hot springs and stagnant waterIt survive and multiply inside free-living amoeba and other protozoaInhalation of aerosols- cooling towers, air conditioners and shower headsBuffered Charcoal Yeast Extract BCYE medium with L-cysteine and antibiotic supplements with 5 CO2 at pH 6.9Clinical featuresAtypical pneumoniaLegionnaires disease- may be either epidemic or sporadicOIncubation period- 2- 10 daysOFever, nonproductive cough and dyspnea, rapidly progresses to pneumonia if untreatedODiarrhea and encephalopathy are commonPontiac fever- milder, non-fatal, influenza like illness with fever, chills, myalgia and headacheDiagnosisTreatmentSpecimen - Sputum, bronchial aspirate, transtracheal aspirate, lung biopsy.ELISA or IFT Macroloides, ciprofloxacin and tetracyclinesRef: Ananthanarayan 9th edition, 401-402 