Short term effects of airborne pollen concentrations on asthma epidemic

Tob''as A; Gal''n I; Banegas J R; Ar''nguez E
August 2003
Thorax;Aug2003, Vol. 58 Issue 8, p708
Academic Journal
BACKGROUND: Few studies have used time series to investigate the relationship between asthma attacks and aeroallergen levels on a daily basis. METHODS: This study, based on time series analysis adjusting for meteorological factors and air pollution variables, assessed the short term effects of different types of allergenic pollen on asthma hospital emergencies in the metropolitan area of Madrid (Spain) for the period 1995-8. RESULTS: Statistically significant associations were found for Poaceae pollen (lag of 3 days) and Plantago pollen (lag of 2 days), representing an increase in the range between the 99th and 95th percentiles of 17.1% (95% confidence interval (CI) 3.2 to 32.8) and 15.9% (95% CI 6.5 to 26.2) for Poaceae and Plantago, respectively. A positive association was also observed for Urticaceae (lag of 1 day) with an 8.4% increase (95% CI 2.8 to 14.4). CONCLUSIONS: There is an association between pollen levels and asthma related emergencies, independent of the effect of air pollutants. The marked relationship observed for Poaceae and Plantago pollens suggests their implication in the epidemic distribution of asthma during the period coinciding with their abrupt release into the environment.


Related Articles


    An abstract of the article "Air Quality Index and Pollen Exposure on Asthmatic Children min Arkansas" by Marie McRae, Nancy Lowe, and Gary R. Lowe is presented.

  • Exercising in asthma.  // Prevention India;Sep2013, p17 

    The article discusses the diagnosis and treatment of asthma. It mentions that the asthma affects the airways that carry air through lungs. It mentions that the airways are sensitive to various changes including temperature and humidity. It focuses on avoiding exercise during chest infections. It...

  • Association of allergic rhinitis or asthma with pollen and chemical pollutants in Szeged, Hungary, 1999-2007. Makra, László; Matyasovszky, István; Bálint, Beatrix; Csépe, Zoltán // International Journal of Biometeorology;Jul2014, Vol. 58 Issue 5, p753 

    The effect of biological (pollen) and chemical air pollutants on respiratory hospital admissions for the Szeged region in Southern Hungary is analysed. A 9-year (1999-2007) database includes-besides daily number of respiratory hospital admissions-daily mean concentrations of CO, PM, NO, NO, O...

  • Application of the chi-plot to assess for dependence in environmental epidemiology studies. Tobías, Aurelio; Sáez, Marc; Galán, Iñaki // Environmental & Ecological Statistics;Jun2007, Vol. 14 Issue 2, p181 

    Several studies have illustrated the short-term effects of environmental factors such as air pollution on health, using a wide range of time-series regression models. However, there have been few reports of descriptive analyses based on data visualization, which can be used for a preliminary...

  • Effect of nitrogen dioxide and ozone on the risk of dying in patients with severe asthma. Sunyer, J.; Basagaña, X.; Belmonte, I.; Antó, J. M. // Thorax;Aug2002, Vol. 57 Issue 8, p687 

    Background: A study was performed to assess the acute association between air pollution, pollen and spores, and mortality in a population based cohort of subjects with asthma recruited from emergency room admissions for an asthma exacerbation using a case crossover design. Methods: Patients in...

  • Role of outdoor aeroallergens in asthma exacerbations: epidemiological evidence. Atkinson, R. W.; Strachan, D. P. // Thorax;Apr2004, Vol. 59 Issue 4, p277 

    This article presents an epidemiological study of the role of outdoor aeroallergens or environmental pollutants in asthma exacerbations. Much of the evidence comes from ecological "time series" studies that use sophisticated statistical methods to examine temporal associations between daily...

  • Temporal associations between daily counts of fungal spores and asthma exacerbations. Atkinson, R. W.; Strachan, D. P.; Anderson, H. R.; Hajat, S.; Emberlin, J. // Occupational & Environmental Medicine;Sep2006, Vol. 63 Issue 9, p580 

    Background: Outdoor aeroallergens are one of a number of environmental factors thought to precipitate asthma exacerbations. Aims: To investigate the short term associations between daily fungal spore concentrations and indicators of daily asthma exacerbations in a large urban population....

  • Fighting for Air. Belli, Brita // E: The Environmental Magazine;May/Jun2013, Vol. 24 Issue 3, p20 

    The article reports that climate change is leading to more pollen and asthma problems. The ground-level ozone reaches unhealthy levels in cities on hot days that makes the air more difficult to breathe. Increased pollen is also a consequence of global warming contributing to allergy and asthma...

  • The Effect of Climate Change and Air Pollution on Allergenic Potential of Pollens. TODEA, Doina A.; SUATEAN, Iuliu; COMAN, Andreea C.; ROSCA, Loredana E. // Notulae Botanicae Horti Agrobotanici Cluj-Napoca;2013, Vol. 41 Issue 2, p646 

    Climate change is associated with atmospheric warming due to continuous increase in anthropogenic greenhouse gas concentration following the industrial revolution. The urban areas are more responsible for these changes. Europe for example has experienced a progressive warming +0.9 °C for...


Read the Article


Sign out of this library

Other Topics