Abstract
African swine fever (ASF) is an acute, hemorrhagic, highly contagious disease caused by African swine fever virus (ASFV) infection of domestic pigs and wild boars, showing mortality rates up to 100 %. There are no effective vaccines or antiviral drugs available for ASFV. Therefore, disease control is mainly based on animal slaughtering and the enforcement of strict sanitary measures. In order to establish a rapid, sensitive and simple method for on-site detection of ASFV, a recombinase polymerase amplification (RPA) combined with lateral flow dipstick (LFD) was developed using a pair of specific primers and probe. Using recombinant plasmid pMD19-T-K205R DNA as a template, the RPA-LFD detection could be accomplished in 10 min at a temperature of 36℃-44℃. More specific than PCR and more rapid and simpler than real-time PCR, RPA-LFD has the same detection limit of 1 × 102 copies/reaction as real-time PCR, also with no cross-reaction with other viral strains. A convenient and rapid ASFV RPA-LFD detection method was developed, which will provide an efficient method for investigating epidemiology of ASFV infection.
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