Bragg, R.R. (Robert Richard); Combrink, Marianne E.; Bigalke, R.D.
(Published by the Government Printer, Pretoria., 1988)
A total of 3 257 samples of diseased rainbow trout were examined for the presence of viruses from January
1983 to December 1987. A virus closely related to the VR 299 serotype of infectious pancreatic necrosis virus