Abstract
Legionellarie’s disease affects humans causing mild to severe pneumonia , specifically in immune –compromised patient . The aim of this study was to identify the causative agent and to detetermine the frequency of Legionella Pnemophila in water air condition. One hundred from water samples were collected from different condition by cotton swab during November to December .environmental samples were isolated and cultured on special media Buffer Charcoal Yeast Extract Agar (BCYE) and biochemical tests were done include : gram stain , indole , motility , citrare utilization . urease ,litumus milk decolrization kligler Iron Agar Antibiotic Sensitivity test to detect resistance or susceptibility. 22 of 100 water sample were growth .the organism was gram negative bacilli sensitive to Erythromycin , Colistin , Gentamycin , Amoxicillin and coloroamphinicoal This study concluded that legionella pnemophila exist in water air condition in Sudan with high concentration in winter further research detect during all four season .
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