The Ansis health agency told AFP on Thursday that two vaccines tested in France against bird flu were “very effective” in protecting Mullard ducks, which are bred to make foie gras. “The favorable results provide sufficient guarantees to start the vaccination campaign in the fall of 2023,” the Ministry of Agriculture explains on its website.
Last year, two web-footed vaccines manufactured by Boehringer Ingelheim and Ceva Santé Animale laboratories began to be tested in France. Vaccines were experimented with other bird species in other European countries.
Two vaccines suppress indirect transmission of avian flu
With the vaccination, “very low excretion of virus was found in the inoculated animals,” Beatrice Grasland, head of the national reference laboratory for avian influenza Ploufragan-Plouzane-Niort, told AFP.
The two vaccines had “very similar” results and “almost stopped direct transmission” and “suppressed” indirect transmission, from the air, he indicated, assessing the method as “very effective”. According to the expert, the vaccinated ducks presented a “very good level of protection, even in direct contact in the same park, with the droppings” of infected ducks.
country with disease
Ducks are highly susceptible to the virus and shed it into the environment before symptoms appear, allowing the disease to spread silently. Avian influenza is also spreading in Latin America, where cases have been reported since October last year in countries such as Mexico, Honduras, Guatemala, Panama, Venezuela, Uruguay, Paraguay and Argentina.
In Brazil, health authorities declared a state of “animal health emergency” last Monday after eight cases were confirmed in wild animals, to prevent the virus from reaching farmed bird production.
Bird flu has killed nearly 9,000 marine animals in Chile this year, according to data from the National Fisheries Service released on Thursday, May 25. The northern macrozone concentrates the highest mortality rates of these animals, with the region of Arica and Parinacota leading the ranking, followed by Antofagasta, Atacama, Tarapaca, and Coquimbo. In this regard, Esteban Donoso, national director of Sernapesca, indicated: “The confirmation of the new species and territory activates protocols for active monitoring of the coastal fringes, coordinating the burial of stranded animals with the authorities, thus seeking to avoid the spread of the virus”.
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