Duckling flavivirus disease inactivated vaccine and preparation method thereof

The invention discloses a duckling flavivirus disease inactivated vaccine and a preparation method thereof. The duckling flavivirus disease inactivated vaccine contains an inactivated duckling flavivirus strain and an adjuvant. The preparation method comprises the following steps of: culturing seed viruses for producing duckling flavivirus disease strains on a large scale to collect a virus liquid; inactivating the collected virus liquid, adding into the adjuvant, and emulsifying to obtain the duckling flavivirus disease inactivated vaccine. The invention further discloses a duckling flavivirus JM strain which is collected in the China Center for Type Culture Collection on October 14th, 2011 with the collection number of CCTCCV201131. The ''duckling flavivirus disease'' inactivated vaccine has the advantages of high safety, no untoward effect on ducklings, good immune effect, capability of remarkably enhancing the resistance of laying ducks to duckling flaviviruses, clinical application to prevention of the ''duckling flavivirus disease'' and remarkable economic and social benefits.