Respiratory symptoms, asthma and allergen levels in schools - comparison between Korea and Sweden

Few studies have been published on comparison of allergen levels in schools in different parts of the world. The main aim of that study was to measure allergen concentrations in settled dust and in air samples collected in selected primary Korean schools and then to compare them with a similar one in Sweden. The second aim was to compare the reported symptoms among pupils in those schools by use of a questionnaire. Correlations between pet-keeping at home and allergen levels in the Korean classrooms were then investigated.