In cystic fibrosis the most common organism which causes infection is
Respiratory infections are characteristic feature of cystic fibrosis in the presence of viscous secretions blocking medium and small airways.The most common organism is Staphylococcus aureus.Other organisms include H.influenza,Pseudomonas aeruginosa,etc. Ref:Harrison's med:18th edition,page no:1697.
Pseudomonas
Staphylococcus
Kiebsiella
Streptococcus
Respiratory system