Asthma in silk workers.

Area of Science:

• Occupational Health
• Environmental Medicine
• Pulmonology

Background:

• Raw silk processing involves exposure to fine dust from silkworm gum.
• This dust is a potential respiratory sensitizer.
• Understanding occupational health risks in the silk industry is crucial.

Purpose of the Study:

• To investigate the prevalence of occupational asthma in raw silk processing workers.
• To identify potential correlations between job roles, dust exposure, and asthma incidence.
• To characterize the timing and type of asthma symptoms.

Main Methods:

• A cross-sectional study was conducted on 53 female, non-smoking raw silk workers.
• Workers with an average of 5.8 years of service were examined.
• Prevalence of occupational asthma was assessed across different processing stages (twisting, degumming, weaving).

Main Results:

• Eighteen (33.9%) workers were diagnosed with occupational asthma.
• Prevalence was highest in silk twisters (48.2%), followed by degumming (20.0%), and weaving (16.6%).
• Asthma symptoms were intermediate and late-phase, occurring during and after work hours.

Conclusions:

• Occupational asthma is a significant risk in raw silk processing.
• Dust exposure levels, varying by processing stage, appear to influence asthma prevalence.
• Intervention strategies should focus on reducing dust exposure, particularly in high-risk roles like silk twisting.