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The two rabbit hemorrhagic disease virus , named the RHD - NW1 strains and RHD - NW2 strains isolated from Wuchuan County , Inner Mongolia Autonomous Region . Their morphological , physical, chemical and biological characterization . The results showed that the two isolates for 4 passages in rabbits , the typical rabbit viral haemorrhagic disease symptoms and pathological changes , the virulent strain virulence . The virus particles in the electron microscope, the spherical diameter of about 30nm , non-enveloped , the edge of the toothed projections arranged uniformly solid ( about 40% ) and hollow (about 60%) of 2 kinds of virus particles . Virus is not sensitive to ether , trypsin , acid ( PH3 ) , heat ( 56 ° C , 60 minutes ) , the person O , B - type red blood cells are highly aggregated , and rabbit viral hemorrhagic disease sera inhibition . Two separate virus and the laboratory previously isolated a virus as a kind of poison, developed inactivated oil emulsion vaccine and inactivated vaccine of aluminum hydroxide . Developed by the two vaccines sterile and physical and chemical testing are satisfactory. The vaccine to high-dose inoculated rabbits without any adverse reaction ; rabbits infected rabbits with a virulent attacks , which have received protection . The two vaccine immune rabbit duration at least 5 months .
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