RT Journal Article SR Electronic T1 Aspergillus fumigatus colonisation and population density of place of residence in cystic fibrosis. JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 139 OP 140 DO 10.1136/adc.70.2.139 VO 70 IS 2 A1 Simmonds, E J A1 Littlewood, J M A1 Hopwood, V A1 Evans, E G YR 1994 UL http://adc.bmj.com/content/70/2/139.abstract AB The relation between antibody titres of aspergillus in patients with cystic fibrosis and the population density of their place of residence was investigated. Patients with high titres of antibodies to Aspergillus fumigatus were significantly more likely to live in an area of low population density. Living in a rural environment may predispose to A fumigatus colonisation.