Respiratory and allergic symptoms in wool textile workers

Area of Science:

• Occupational Health
• Epidemiology
• Environmental Health

Background:

• Wool textile mill workers face occupational exposure to airborne dust.
• Respiratory symptoms are common complaints in this industry.
• Previous studies suggest a link between dust exposure and respiratory issues.

Purpose of the Study:

• To investigate the relationship between inspirable wool mill dust exposure and respiratory symptoms.
• To quantify the prevalence of various respiratory symptoms in wool textile workers.
• To assess the risk of symptoms associated with different levels of dust exposure.

Main Methods:

• An epidemiological study involving 2153 workers across 15 wool textile mills.
• Administration of a validated questionnaire on respiratory symptoms (translated to Urdu for non-fluent speakers).
• Environmental survey with 629 inspirable dust measurements to estimate worker exposure levels.

Main Results:

• Prevalence rates: persistent cough and phlegm (9%), wheeze (31%), breathlessness (10%), rhinitis (18%), conjunctivitis (10%).
• Higher dust exposure correlated with increased frequency of cough, phlegm, wheeze, breathlessness, rhinitis, conjunctivitis, and nosebleeds, even after adjusting for confounders.
• At 10 mg/m3, relative risks for symptoms ranged from 1.24 (rhinitis) to 1.70 (conjunctivitis) compared to unexposed workers.

Conclusions:

• Inspirable wool mill dust exposure is associated with a higher prevalence of respiratory and eye symptoms.
• Current UK dust standards may not fully protect workers from adverse health effects.
• Further research is needed to evaluate the functional impact of dust exposure on lung health.