Epidemiological investigations of the respiratory tract bacteriology in patients with cystic fibrosis.

Adolescent Bacteria/isolation & purification Child Child, Preschool Cystic Fibrosis/drug therapy,microbiology,therapy Escherichia coli/isolation & purification Follow-Up Studies Haemophilus influenzae/isolation & purification Humans Infant Klebsiella/isolation & purification Proteus/isolation & purification Pseudomonas aeruginosa/isolation & purification Respiratory Therapy Respiratory Tract Infections/microbiology Sputum/microbiology Staphylococcus/isolation & purification Streptococcus/isolation & purification Streptococcus pneumoniae/isolation & purification Sulfonamides/therapeutic use Time Factors Trachea/microbiology

Sulfonamides