The surge of the global avian influenza epizootic caused by the genotype Z high pathogenic avian influenza virus (HPAIV) has posed numerous questions, in particular to risk managers and policy makers. Scientific knowledge is thin on many aspects of the ecology and environmental properties of HPAIVs, in particular H5N1. Virus survival, a key element in control strategies, is an illustration of this paucity of knowledge. Data from the literature on AIV survival are rather limited, often very old and sometimes not confirmed from one study to another or even contradictory. The results obtained with various sub-types of influenza A viruses cannot be extrapolated to the current A(H5N1) viruses before a careful consideration. Further, few information is provided regarding the survival of IVs in the air and surfaces. Meantime, no standardised protocols exist to detect AIVs in waters, in the air or in/on solid matrices. Ideally, the virus detection technique to be used should be sensitive, quantitative, rapid and applicable in routine before or after a standardised sampling method, including or not concentration.
To understand the role of environment (water, manure, excrement, air, soils, housing…) in the survival of the virus and in the re-emergence of outbreaks.
Epidemiology : Flavie Goutard; Anne-Lise Tran
Le projet est entièrement financé par le 6ème programme-cadre du Commission européen sous la référence SSP - 5-B-INFLUENZA 044405