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Document ID (ISN)100598
CIS number 02-1935
ISSN - Serial title 1529-8663 - AIHA Journal
Year 2000
Convention or series no.
Author(s) Moore J.S., Christensen M., Wilson R.W., Wallace R.J., Zhang Y., Nash D.R., Shelton B.
Title Mycobacterial contamination of metalworking fluids: Involvement of a possible new taxon of rapidly growing mycobacteria
Bibliographic information Mar.-Apr. 2000, Vol.61, No.2, p.205-213. Illus. 23 ref.
Abstract Contamination of air and metalworking fluid (MWF) systems by a rapidly growing mycobacterium (RGM) was detected in a manufacturing plant with recent cases of hypersensitivity pneumonitis (HP). Environmental sampling was performed to determine the extent of the contamination and its variability over time. RGM were present in multiple indoor air samples, central MWF storage tanks, and cutting, drilling, and grinding machines. Contamination was essentially limited to a formulation of semi-synthetic MWF recently introduced in the plant. In general, the mycobacterial counts were stable over time, with the degree of contamination ranging from 102-107 colony forming units/mL. Using molecular techniques, it was found that the mycobacterial isolates consisted of a single strain and represented a previously undescribed taxon closely related to Mycobacterium chelonae/abscessus. The relationship of this mycobacterium to the cases of HP remains unknown.
Descriptors (primary) extrinsic allergic alveolitis; metalworking industry; cutting fluids; bacteria
Descriptors (secondary) mycobacterial infections; grinding machines; air sampling; drilling machines; storage tanks; radial-knife cutting machines
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Metal production and metalworking
Broad subject area(s) Biological hazards
Browse category(ies) Pneumoconioses
Metalworking industry
Bacterial and parasitic diseases