. Author manuscript; available in PMC: 2014 Apr 28.

Published in final edited form as: Paediatr Respir Rev. 2010 Jun 16;11(3):177–184. doi: 10.1016/j.prrv.2010.05.003

Table 2.

Classification of Pseudomonas aeruginosa Infection

	Copenhagen³⁴	Leeds³⁶	European Consensus²¹
Chronic infection	6 consecutive monthly sputum samples with growth of Pa, or a rise in Pa-specific antibodies	Pa cultures were positive in 50% or more of the 12 months	Presence of Pa for at least 6 months, based on 3 positive cultures at least 1 month apart
Intermittent infection	At least 1 isolate of Pa with normal Pa antibody levels	Pa cultures were positive in 50% or less of the 12 months
Free of infection		No growth of Pa during the previous 12 months, having had a previous Pa positive culture
Never		Pa never cultured from sputum or cough swab

Pa-Pseudomonas aeruginosa