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14 - Handling infectious agents in the ART laboratory

from Part III - Infection and the assisted reproductive laboratory

Published online by Cambridge University Press:  29 October 2009

Kay Elder
Affiliation:
Bourn Hall Clinic, Cambridge
Doris J. Baker
Affiliation:
University of Kentucky
Julie A. Ribes
Affiliation:
University of Kentucky
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Summary

Rigorous attention to maintaining a clean laboratory environment, a sterile culture microenvironment and aseptic technique at the interface of the two, should minimize exogenous contamination of gamete handling and culture systems in the ART laboratory. All human tissue and samples, regardless of prior testing for infectious agents, must be regarded as a potential hazard and handled accordingly. Samples identified as a biohazard after screening must be handled with extreme caution, according to specified protocols and procedures.

Blood-borne viruses

The blood-borne viruses (BBV), Hepatitis B, C, D and HIV are all potent pathogens capable of causing severe disease and death, with few effective treatments available. Nosocomial transmission of Hepatitis C has been reported (Lesourd et al., 2000, see below), and HBV transmission through contact with environmental surfaces has been demonstrated. The stability of HIV and HBV under different conditions has been determined experimentally.

  • HIV in high starting concentrations can remain infectious for 3 weeks or more in dried blood.

  • Infectious HIV can be detected for at least 2 months in liquid blood at room temperature.

  • HBV in dried plasma can retain infectivity for at least 4 months, and this is likely to be even longer in liquid blood or plasma.

  • Infectious HIV has been recovered from bodies up to 16 days after death, and it should be assumed that HBV is at least equally as robust.

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Publisher: Cambridge University Press
Print publication year: 2004

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