Prevention of Work-related Asthma: Study Search Results

Study Details
Prevention LevelPrimary
Study Year1994
Molecular Weight of AgentHMW
AgentAspergillus niger
OccupationWorkers manufacturing citric acid (Includes cohort reported by Topping, 1984)
Outcome/DiagnosisOccupational asthma
Activity InterventionEnclosure of process, exhaust ventilation, respirator use, education (1984)
Participation RateOriginal cohort: 101 of 261 eligible subjects (Participation rate: 39%) New workers: 37 of 76 eligible subjects (Participation rate: 49%)
Intervention EffectivenessBefore intervention, 18 of 343 workers were diagnosed with OA. No new cases of OA or specific skin sensitization occurred among original cohort with no symptoms in 1984 (n=90) or new workers surveyed in 1988 (n=34) who survived up through the last follow-up in 1991.
Page last reviewed: May 25, 2022