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Dust storms increase the risk of respiratory illnesses
Last reviewed: 01.07.2025
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A new study published in the journal Respirology shows that dust storms increase hospitalizations for chronic lung diseases, particularly chronic obstructive pulmonary disease (COPD).
Dust storms in East Asia and southern China are caused by dust blowing over long distances from northern China. Concentrations of large particles, with diameters ranging from 2.5 to 10 micrometers, can reach very high levels.
The researchers, led by Professor T. Wong from the Chinese University of Hong Kong, analysed data on daily emergency department visits for respiratory illnesses in Hong Kong, air pollutant indices and meteorological variables from January 1998 to December 2002. They then identified five dust storms during this period and made comparisons using independent case-crossover t-tests.
The results showed a 5% increase in hospital admissions for COPD two days after a dust storm. The researchers found a link between higher concentrations of large particles produced by dust storms and a higher risk of respiratory diseases, particularly COPD.
"Our results highlight the need for timely warnings for patients with chronic lung diseases to avoid exposure to polluted air in this category of people," notes T. Wong.
Professor Frank J Kelly of King's College London and colleagues propose the introduction of national air quality indices and associated warning services to warn of the potentially harmful health effects of dust storms.
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