Congratulations! DHN has obtained the production approval number for the Muscovy duck Reovirus Live Vaccine (CA Strain), with the veterinary drug production number 190032221, and the commercial name: Yahuwei.

Good news! DHN has obtained the production approval number for the Muscovy duck Reovirus Live Vaccine (CA Strain), with the veterinary drug production number 190032221, and the commercial name: Yahuwei (鸭呼威).

Muscovy duck Reovirus Disease (commonly known as "liver white spot disease" or"flower liver disease" in Muscovy ducks) is caused by the Muscovy Duck Reovirus (MDRV). It is a highly contagious and newly emerged disease in Muscovy duck breeding areas in Fujian, Zhejiang, Guangdong, Guangxi, and other provinces in China since 1997. Clinically, it is mainly characterized by soft legsand a large number of white necrotic spots in the liver and spleen. The disease occurs in ducks aged 7 ~ 45 days, with an incidence rate of 30% ~ 90% and amortality rate of 60% ~ 80%. Survivors become stunted ducks. Due to the unknown cause and lack of safe and effective vaccines, it has caused huge economic losses to the Muscovy duck industry.

The Muscovy duck Reovirus Live Vaccine (CA Strain) was developed by the Fujian Academy of Agricultural Sciences after over 10 years of research. The pathogen was isolated and identified, a rapid diagnostic method was established, and for the first time at home and abroad, an attenuated virulent strain of the Muscovy duck Reovirus was selected using biotechnology, and a safe and effective vaccine was developed. It is a world-first major innovative achievement with fully independent intellectual property rights and was awarded the national Class I new veterinary drug certificate in 2013. It has four major advantages:

1. Good safety: No adverse reactions were observed when 10 doses were injected into 1-day-old ducklings;

2. Stable genetictraits: No increase in virulence after 5 blind passages in Muscovy ducks;

3. Reliable immune effect: The protection rate is more than 90% 7 days after immunization;

4. Immune period of 7 days, one shot is enough;

5. Stable quality:The shelf life is 18 months at -15°C.

DHN is one of the only two enterprises in China that have obtained the production qualification for the Muscovy duck Reovirus Live Vaccine (CA Strain), breaking the monopoly of the market by a single company for nearly ten years. The acquisition of this product's production approval marks DHN's commitment to the mission of "being animal health expert and serving for human health," continuously optimizing the product structure, increasing R&D investment, and insisting on improving the quality through technological innovation to ensure the healthy development of the breeding industry.

Ou Xilang