In the serum from the carp that had died of KHVD, no antibody was found neither by ELISA nor by SNT.
Earlier studies on KHV led  and  to conclude that KHVD cannot be transferred to fish other than C.
Carp do not develop antibodies when there is a productive infection with KHV ensuing, which was evident by the negative reaction found with carp serum from the animal that had died of KHVD. Moreover, those reactions were confirmed with 20 sera from carp that displayed severe clinical signs after infection with KHV.
This information will be vital for controlling outbreaks of KHVD. Further investigations on immunogenesis after infection with KHV are urgently needed.