Community Composition Determines Activity of Antibiotics against Multispecies Biofilms.

In young cystic fibrosis (CF) patients, is typically the most prevalent organism, while in adults, is the major pathogen. More recently, it was observed that also plays an important role in exacerbations of respiratory symptoms. These species are often coisolated from CF lungs, yet little is known about whether antibiotic killing of one species is influenced by the presence of others.