Occupational Asthma Reference

Moniodis A, Hamilton T, Racila E, Cockrill B, McCunney R, Hypersensitivity pneumonitis in a high school teacher, Occup Med (London), 2015;65:598-600,10.1093/occmed/kqv092

Keywords: MWF, case report, teacher, pseudomonas pseudoalkaligenes, USA, BAL, histology, VATS,

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Hypersensitivity pneumonitis (HP) is an inflammatory lung disease mediated by an immunological response to an inhaled antigen. Outbreaks of HP have been reported in industrial settings where manufacturing workers are exposed to water-based metalworking fluids (MWFs). Water-based MWFs promote growth of microorganisms and can be easily aerosolized and are thus potential aetiological agents of HP. We present a case of HP caused by exposure to water-based MWF in a vocational high school teacher. Culture of MWF used at his school grew Pseudomonas pseudoalcaligenes. This is the first known report of MWF-induced HP outside an industrial setting. The growth of Pseudomonas spp in this case recalls the earliest reports of the microbiology of MWF-induced HP and suggests that routine bacterial culture may be useful in the diagnosis of HP in workplaces without standard cleaning and biocide regulations.

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