Abstract
Since 2016, A(H5) highly pathogenic avian influenza (HPAI) viruses from the clade 2.3.4.4b of the A/goose/Guangdong/1/1996 lineage are posing challenges worldwide and threatening the sustainability of the poultry sector. Since 2021, the A(H5N1) highly pathogenic avian influenza epizootic has spread over almost all continents and caused more than 200 million deaths in Europe and America in wild and domestic birds. France was particularly affected with the culling of more than 30 million of poultry, particularly in the duck production sector. France decided to launch a preventive mandatory vaccination plan against HPAI virus in ducks, beginning from October 2023. This work will present the evaluation of the duck vaccination campaign against HPAI in France after two winter seasonal periods including the results of post-vaccination surveillance. Preliminary analysis of data covering the first six months of the campaign indicates an overall satisfactory compliance with vaccination in the field: 95% of meat duck flocks and 96% of duck flocks for foie gras production were vaccinated. Implementation of the post-vaccination active surveillance program also complied with regulatory requirements. However, field application of the weekly enhanced passive surveillance was challenged with practical difficulties and it needs improvement. The virological and epidemiological investigations carried out following the detection of HPAI outbreaks in vaccinated duck farms will be also described. Recommendations on post-vaccination surveillance protocols will be proposed on the basis of these results.
Co-Author(s)
Morgane Salines, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
Axelle Scoizec, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
Eric Niqueux, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
Audrey Schmitz, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
François-Xavier Briand, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
Martine Cherbonnel-Pansart, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
Gabriel Euller-Nicolas, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
Claire Martenot, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
Pascale Massin, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
Andréa Jimenez-Pellicer, French Ministry of agriculture and food sovereignty
Olivier Debaere, French Ministry of agriculture and food sovereignty
Karen Bucher, French Ministry of agriculture and food sovereignty
Nicolas Eterradossi, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
Beatrice Grasland, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
Sophie Le Bouquin-Leneuveu, French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Laboratory of Ploufragan-Plouzané-Niort
Abstract Category
Diagnostics, vaccination, or other mitigation strategies for poultry and wildlife