ArticleFrontiers in microbiology2026
Confirmation of gamma irradiation-mediated inactivation of a vero-adapted African swine fever virus Lisbon 60 strain for molecular assays.
Article in Frontiers in microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
African swine fever virus (ASFV), the etiologic agent of African swine fever (ASF), is a high-consequence pathogen requiring experiments to be conducted in containment in non-endemic countries, thereby restricting diagnostic development, the creation of reference standards, and proficiency testing (PT). Safe and reliable inactivation methods are essential to expand diagnostic capacity while preserving nucleic acid integrity for molecular assays in unaffected countries. This study employed gamma irradiation to achieve complete inactivation of ASFV without compromising downstream molecular detection, as gamma irradiation offers deep penetration and uniform dose delivery. ASFV-cell culture supernatants were subjected to gamma irradiation doses ranging from 2 to 50 kGy. Viral replication was evaluated using TCID50 and serial passages, revealing a consistent dose-dependent reduction in infectivity across increasing irradiation dose levels and a complete loss of ASFV infectivity at 30 and 50 kGy. Molecular detection remained unaffected at all of the tested doses as confirmed by qPCR Ct values and sequence identity of the
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