PROTECTION TESTS IN PIGS VACCINATED WITH THE LAPINIZED CHINESE STRAIN OF HOG-CHOLERA VIRUS (HCV) PREVIOUSLY ADAPTED IN A MINIPIG KIDNEY (MPK) CELL-LINE, TO CHALLENGE INFECTION WITH VIRULENT HCV

Pigs which had been vaccinated with the Lapinized Chinese strain of Hog Cholera Virus previously adapted in a minipig cell line cultures (MPK-LC-HCV), resultet to be protected when they were subjected to challenge infection with virulent Hog Cholera Virus (HCV) 6 or 11 months later. The challenge virus was never isolated from any of the vaccinated pigs. The MPK-LC-HCV vaccine induced a significant rise of the antibody titer to the HCV in pigs kept under field conditions.