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Clinical Microbiology Reviews, Jul 1995, 389-405, Vol 8, No. 3
DL Sewell
An estimated 500,000 laboratory workers in the United States are at risk of
exposure to infectious agents that cause disease ranging from inapparent to
life-threatening infections, but the precise risk to a given worker
unknown. The emergence of human immunodeficiency virus and hantavirus, the
continuing problem of hepatitis B virus, and the reemergence of
Mycobacterium tuberculosis have renewed interest in biosafety for the
employees of laboratories and health care facilities. This review examines
the history, the causes, and the methods for prevention of
laboratory-associated infections. The initial step in a biosafety program
is the assessment of risk to the employee. Risk assessment guidelines
include the pathogenicity of the infectious agent, the method of
transmission, worker-related risk factors, the source and route of
infection, and the design of the laboratory facility. Strategies for the
prevention and management of laboratory- associated infections are based on
the containment of the infectious agent by physical separation from the
laboratory worker and the environment, employee education about the
occupational risks, and availability of an employee health program.
Adherence to the biosafety guidelines mandated or proposed by various
governmental and accrediting agencies reduces the risk of an occupational
exposure to infectious agents handled in the workplace.
Copyright © 1995 by the American Society for Microbiology. All rights reserved.
Laboratory-associated infections and biosafety
Pathology and Laboratory Medicine Service, Veterans Affairs Medical Center, Portland, Oregon 97201, USA.
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