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Hypersensitivity Pneumonitis Caused by a Contaminated Cool-Mist Vaporizer

[+] Article and Author Information

Grant support: grant HL 15389, the National Heart and Lung Institute; and clinical research grant MO88, the National Institutes of Health.

▸Address reprint requests to Glenn R. Hodges, M.D., Naval Hospital, Great Lakes, IL 60088.

Great Lakes, Illinois, and Milwaukee, Wisconsin

Ann Intern Med. 1974;80(4):501-504. doi:10.7326/0003-4819-80-4-501
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A patient with hypersensitivity pneumonitis caused by a contaminated cool-mist vaporizer, a previously unreported association, is presented. Although several fungal and bacterial organisms were isolated from the vaporizer, the specific antigen to which the patient was sensitive was not identified. Further evaluation suggested that an insoluble, particulate antigen not related to the microorganisms isolated from the vaporizer was the causal agent. This case reemphasizes the need to suspect hypersensitivity pneumonitis in all patients with "recurrent pneumonia."





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