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The Influence of Sensitisation to Pollens and Moulds on Seasonal Variations in Asthma Attacks

Canova, C. and Heinrich, J. and Anto, J.M. and Leynaert, B. and Smith, Matt and Kuenzli, N. and Zock, J. and Janson, C. and Cerveri, I. and de Marco, R. and Toren, K. and Gislason, T. and Nowak, D. and Pin, I. and Wjst, M. and Manfreda, J. and Svanes, C. and Crane, J. and Abramson, M. and Burr, M. and Burney, P. and Jarvis, D. (2013) The Influence of Sensitisation to Pollens and Moulds on Seasonal Variations in Asthma Attacks. European Respiratory Journal, 42 (4). pp. 935-945. ISSN 0903-1936 Online: 1399-3003

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Abstract

No large study has described the seasonal variation in asthma attacks in population-based asthmatics in whom sensitisation to allergen has been measured.2637 young adults with asthma living in 15 countries reported the months in which they usually had attacks of asthma and had skin-prick tests performed. Differences in seasonal patterns by sensitisation status were assessed using generalised estimating equations.Most young adults with asthma reported periods of the year when their asthma attacks were more common (range: 47% in Sweden to 86% in Spain). Seasonal variation in asthma was not modified by sensitisation to house dust mite or cat allergens. Asthmatics sensitised to grass, birch and Alternaria allergens had different seasonal patterns to those not sensitised to each allergen, with some geographical variation. In southern Europe, those sensitised to grass allergens were more likely to report attacks occurred in spring or summer than in winter (OR March/April 2.60, 95% CI 1.70–3.97; OR May/June 4.43, 95% CI 2.34–8.39) and smaller later peaks were observed in northern Europe (OR May/June 1.25, 95% CI 0.60–2.64; OR July/August 1.66, 95% CI 0.89–3.10). Asthmatics reporting hay fever but who were not sensitised to grass showed no seasonal variations.Seasonal variations in asthma attacks in young adults are common and are different depending on sensitisation to outdoor, but not indoor, allergens.Seasonal variation in asthma attacks is associated with sensitisation to pollens and moulds, but not indoor allergens http://ow.ly/nsuRS

Item Type: Article
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Uncontrolled Keywords: asthma attacks, asthmatics, sensitisation to allergen, seasonal patterns
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Divisions: Academic Departments > Institute of Science and the Environment
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Copyright Info: Open Access article
Depositing User: Matthew Smith
Date Deposited: 20 Jul 2017 12:17
Last Modified: 24 Jul 2017 10:44
URI: https://eprints.worc.ac.uk/id/eprint/5725

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