Resistance of vaccinia virus to inactivation by solvent/detergent treatment of blood products.
The inactivation of enveloped viruses by two different solvent/detergent combinations, i.e. tri-n-butyl phosphate (TNBP)/Triton X-100 or TNBP/Tween 80, has been investigated using a high purity factor VIII (Replenate) and factor IX (Replenine) respectively. Treatment with TNBP/Triton X-100 rapidly inactivated all the typical enveloped viruses tested, i.e. Sindbis, semliki forest virus (SFV), herpes simplex virus type-1 (HSV-1) and vesicular stomatitis virus (VSV), by 3.7-5.8 log within 15 seconds. While virus inactivation with TNBP/Tween 80 was slower, effective inactivation of Sindbis, HSV-1, VSV and human immunodeficiency virus type-1, i.e. 4.1-->6.3 log, occurred within 30 minutes. In contrast, vaccinia virus was relatively resistant to inactivation in either of these solvent/detergent combinations. Incubation times of 10 minutes for TNBP/Triton X-100 or 6-24 hours for TNBP/Tween 80, were required to reach inactivation levels of about 4 log.[1]References
- Resistance of vaccinia virus to inactivation by solvent/detergent treatment of blood products. Roberts, P. Biologicals (2000) [Pubmed]
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