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Irritant asthma and work: cases from the UK SWORD reporting scheme from 1999 to 2018
David Fishwick1,2, Melanie Carder2, Ireny Iskandar2
1Science Division, Health and Safety Executive Bootle Headquarters, Bootle, Sefton, UK d.fishwick@sheffield.ac.uk.
Occupational and Environmental Medicine
|September 28, 2023
Summary
The incidence of irritant asthma has decreased, but workplace exposures to cleaning products and other agents continue to cause cases. This occupational respiratory disease remains a concern.
Area of Science:
- Occupational Medicine
- Respiratory Health
- Epidemiology
Background:
- Acute irritant asthma is a preventable occupational respiratory disease linked to workplace exposures.
- Limited data exists on the long-term causes and incidence of irritant asthma.
Purpose of the Study:
- To estimate the incidence of irritant asthma reported to a national surveillance scheme.
- To analyze trends in irritant asthma incidence and causative exposures over time.
Main Methods:
- Analysis of cases reported to the UK Surveillance of Work-related Occupational Respiratory Diseases (SWORD) scheme.
- Grouping cases into 5-year periods from 1999 onwards.
- Examining causative exposures, occupations, and incidence rates.
Main Results:
- An estimated 1066 cases of irritant asthma were identified.
- Annual incidence declined from 1.98 to 0.56 per million employed over the study period.
- Cleaning products, acids, and smoke were among the most frequent exposure categories linked to cases.
Conclusions:
- Despite a potential decrease in incidence, irritant asthma cases are consistently linked to known workplace exposures.
- A notable persistence of cases attributed to cleaning agents was observed.
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