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  • Title: Comparison of the inactivation of canine and bovine parvovirus by freeze-drying and dry-heat treatment in two high purity factor VIII concentrates.
    Author: Roberts PL, Hart H.
    Journal: Biologicals; 2000 Sep; 28(3):185-8. PubMed ID: 10964445.
    Abstract:
    The inactivation of bovine parvovirus (BPV) and canine parvovirus (CPV) by freeze-drying and terminal dry-heat treatment at 80 degrees C for 72 h has been investigated in two high purity factor VIII concentrates. In one product, CPV was slightly more resistant to freeze-drying compared to BPV, i.e. 0.7 vs. 1.4 log. However, BPV was substantially more resistant to heat-treatment compared to CPV, i.e. 1.3 vs. > 3.1 log inactivation after 72 h at 80 degrees C. In a second product, CPV was also slightly more resistant to freeze-drying than BPV, i.e. 0.2 vs. 1.3 log inactivation. However, heat-treatment gave essentially similar inactivation for both viruses, i.e. 2.8-3.4 log after 72 h at 80 degrees C. In conclusion, the resistance of these parvovirus models is dependent both on the type of virus and on the specific product involved.
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