Respiratory illness in workers exposed to metalworking fluid contaminated with nontuberculous mycobacteria--Ohio,...

Area of Science:

• Occupational Health
• Environmental Medicine
• Pulmonary Medicine

Background:

• A cluster of respiratory illnesses emerged among machinists at an automobile brake manufacturing plant in Ohio.
• Initial cases presented with severe symptoms including dyspnea, cough, hypoxia, and pulmonary infiltrates, leading to hospitalization.

Observation:

• Three machinists were hospitalized with respiratory illness in January 2001, diagnosed as hypersensitivity pneumonitis (HP).
• By March 2001, additional employees reported similar respiratory and systemic symptoms, prompting an investigation.
• The National Institute for Occupational Safety and Health (NIOSH) was engaged to identify the cause and prevent further cases.

Findings:

• Preliminary investigation suggests exposure to aerosolized nontuberculous mycobacteria (NTM) as a potential contributing factor.
• The identified NTM exposure may be linked to the machining processes within the facility.
• This highlights a potential occupational hazard in the machining industry.

Implications:

• Clinicians should consider occupational respiratory diseases, such as HP, in workers within the machining industry.
• Early recognition of variable presentations of work-related lung conditions is crucial for timely diagnosis and intervention.
• Further investigation is needed to confirm the role of NTM and implement effective control measures to protect worker health.