Comparative Analysis of the Productivity and Immunogenicity of an Attenuated Classical Swine Fever Vaccine (LOM) and an Attenuated Live Marker Classical Swine Fever Vaccine (Flc-LOM-BE) from Laboratory to Pig Farm.

Herein, we compared the productivity of pigs inoculated with one of two classical swine fever (CSF) vaccines (low virulent of Miyagi (LOM) or Flc-LOM-BE) plus the swine (SE) vaccine. The feed intake and weight increase of the pigs inoculated with Flc-LOM-BE + SE were normal. However, the feed intake of the pigs inoculated with LOM + SE dropped sharply from four days post-vaccination (dpv).

Protection of Piglets with Maternally Derived Antibodies from Sows Inoculated with an Attenuated Live Marker Classical Swine Fever Vaccine (Flc-LOM-BE).

Here, we investigated the protective efficacy provided by passive immunity induced by a classical swine fever (Flc-LOM-BE) vaccine with the newly developed DIVA (Differentiating Infected from Vaccinated Animals) function. Ten pigs (aged 40-60 days) with maternally derived antibodies (MDAs) obtained from sows inoculated with the Flc-LOM-BE vaccine were challenged with virulent classical swine fever virus (CSFV). Pigs with an MDA titer of 6 log induced by the Flc-LOM-BE vaccine were fully protected against virulent CSFV challenge but not the pigs with an MDA titer under 5 log.

Rapid Spread of Classical Swine Fever Virus among South Korean Wild Boars in Areas near the Border with North Korea.

There has been a rapid increase in the number of classical swine fever (CSF) sero-positive wild boars captured near the demilitarized zone (DMZ), located the border with North Korea. In 2015-2016, few CSFV-positive antibody boars were detected; however, the number has increased steeply since 2017. Most occurred in the northern region of Gyeonggi before spreading slowly to Gangwon (west to east) in 2018-2019.