How many years has Weijiaba been listed?

8 to 20 years. It will take at least 8 years or even 20 years for Weijiabao vaccine to go on the market. Preclinical research: Screening of strains and cells is the basic guarantee to ensure the safe, effective and sustainable supply of vaccines. Weijiabao is a veterinary drug produced by Lincoln Shuoteng Company in the United States. Its main products are quadruple vaccines of canine distemper, adenovirus type 2, parainfluenza and parvovirus disease-bivalent inactivated vaccine of canine leptospirosis (canine type and jaundice hemorrhagic type)-inactivated vaccine of canine coronavirus disease. Can be used for preventing canine distemper, infectious hepatitis caused by 1 canine adenovirus, respiratory diseases caused by canine adenovirus type 2, canine parainfluenza, canine parvovirus disease, canine coronavirus disease, leptospirosis caused by leptospira canis and hemorrhagic leptospirosis caused by jaundice.