CategorySwine Health-Foreign Animal Disease
Date Full Report Received02/10/2015
Date Abstract Report Received02/10/2015
The overall purpose of this research was to test the efficacy of commercial chemical disinfectants against foreign animal disease (FAD) viruses dried in swine products and on surfaces relevant to the Pork Packing industry. While packing plants have robust sanitization procedures in place, these are designed to limit bacterial contamination, so it is unknown if the disinfectants used are capable of effectively disinfecting the plant in the case of an introduction of FAD virus-infected animals. A further objective was to begin exploring a less pathogenic domestic virus as potential surrogates to replace foot-and-mouth disease virus (FMDV) in disinfection assays and enable disinfection testing outside high containment laboratories.
Using methodology we had previously developed (Krug et al, 2012) two commercial disinfectants currently used in the industry; CD631 (acid quaternary ammonium based) and XY12 (sodium hypochlorite based) were tested against 3 FAD viruses. The three viruses tested were foot-and mouth disease virus (FMDV), classical swine fever virus (CSFV) and African swine fever virus (ASFV). Viruses were tested in contaminated swine products (blood, meat juice, feces) dried onto surfaces (stainless steel, plastic, concrete) relevant to the pork packing industry.
a. Disinfection of pork packing plants should be done with acid-based disinfectants (such as CD631) following manufacturer’s instructions particularly regarding pre-washing procedures.
b. Hypochlorite based disinfectants such as XY12 and bleach should be avoided when organic load (e.g. blood, feces) is high.
c. Concrete surfaces should be sealed to render them nonporous in order to allow appropriate disinfection.
d. Finally, ERAV should not be used as a suitable surrogate virus for FMDV disinfection with hypochlorite-based products and alternate surrogates for FMDV and other FAD viruses should be investigated.