期刊
JOURNAL OF INFECTIOUS DISEASES
卷 209, 期 8, 页码 1205-1211出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/infdis/jit648
关键词
hepatitis C virus; fomites; infectivity; transmission; nosocomial; virucidal agents
资金
- National Institutes of Health (NIH)/National Institute on Drug Abuse [R01 DA030420]
- National Center for Research Resources (NCRR) [UL1 RR024139]
- NIH [1K01CA107092, 1R01AI076259]
Background. Healthcare workers may come into contact with fomites that contain infectious hepatitis C virus (HCV) during preparation of plasma or following placement or removal of venous lines. Similarly, injection drugs users may come into contact with fomites. Hypothesizing that prolonged viability of HCV in fomites may contribute significantly to incidence, we determined the longevity of virus infectivity and the effectiveness of antiseptics. Methods. We determined the volume of drops misplaced during transfer of serum or plasma. Aliquots equivalent to the maximum drop volume of plasma spiked with the 2a HCV reporter virus were loaded into 24-well plates. Plates were stored uncovered at 3 temperatures: 4 degrees C, 22 degrees C, and 37 degrees C for up to 6 weeks before viral infectivity was determined in a microculture assay. Results. The mean volume of an accidental drop was 29 mu L (min-max of 20-33 mu L). At storage temperatures 4 degrees C and 22 degrees C, we recovered viable HCV from the low-titer spots for up to 6 weeks of storage. The rank order of HCV virucidal activity of commonly used antiseptics was bleach (1:10) > cavicide (1:10) > ethanol (70%). Conclusions. The hypothesis of potential transmission from fomites was supported by the experimental results. The anti-HCV activity of commercial antiseptics varied.
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