Inactivated Newcastle disease virus vaccine 
              Scientists involved : Dr. V.D. Padmanaban, Dr. K. Kumanan, Dr. K.Nachimuthu and               Dr. Daniel Joy Chandran  
              Product Technology       
             
              The vaccine is prepared using BHK21 adapted velogenic Newcastle disease virus. The vaccine seed virus has been passaged 41 times in BHK21 cells. The following is the flow chart for vaccine production - Propagation of seed virus in BHK21 cells in fermentors  
              
                - Harvesting the vaccine virus.
 
                -  Concentration of the vaccine virus using vaccine concentrator.
 
                - Inactivation of the vaccine virus using formalin.
 
                - Mixing the vaccine virus with Aluminium Hydroxide gel.
 
                - Bottling and labeling, Sterility, Safety and Potency testing
 
               
              Product Presentation  
                              As 50 or 100 doses vials 
              Product Utility  
                              All the currently available vaccines are being produced in embryonated chicken eggs and internationally it is advised to use Specific Pathogen Free embryos (SPF) for vaccine production. However the use of SPF eggs for vaccine production is likely to increase the cost of vaccine at least 30 times more than the ordinary embryos and further SPF eggs are not freely available in this country currently. The current vaccine has been adapted to BHK21 cellline, a mammalian cellline, which will not permit adventious poultry pathogens. Moreover, bulk antigen production using fermenters is possible using BHK21 cells which are anchorage independent. 
              For further details contact      
                            Department of Animal Biotechnology,  
              Madras Veterinary College,  
              Chennai-600 007  |