“…After that date, Vanlaere and co-workers re-examined the taxonomic position and structure of taxon K (also known as group K), and proposed two novel species, Burkholderia contaminans and Burkholderia lata (Vanlaere et al, 2009). The group of previously unclassified Bcc isolates of taxon K (Vermis et al, 2002;Baldwin et al, 2005;Dalmastri et al, 2005Dalmastri et al, , 2007Payne et al, 2005;Mahenthiralingam et al, 2006) includes bacteria isolated worldwide from human and environmental sources, namely from sputum cultures of CF patients in the UK, Italy, Portugal, USA, Canada, China, Brazil, Argentina and Australia (Cunha et al, 2003(Cunha et al, , 2007Campana et al, 2005;Assaad et al, 2006;Mahenthiralingam et al, 2006;Jordá-Vargas et al, 2008;Fang et al, 2010;Martina et al, 2013;Ramsay et al, 2013), as well as from river water, human-built water reservoirs, soil, roots, animals, pharmaceutical products, such as contaminated nasal spray, personal care products and domestic products (Souza et al, 2004;Mahenthiralingam et al, 2006Mahenthiralingam et al, , 2008Martin et al, 2011). B. contaminans has a low prevalence in CF patients worldwide, with remarkable exceptions in Argentina and in Spain (Martina et al, 2013).…”