Strengthen the health security of oysters in Loire-Atlantique

Strengthen the health security of oysters in Loire-Atlantique in order to enhance the work of oyster farmers. Consequently, guarantee a quality product to the consumer and the aim of an upcoming experiment carried out with professionals in the sector.

Hailed for an oyster farmer is the prohibition for selling its products for a given period. Moreover, The health safety control is constantly done for consumer safety. Consequently, Conchyls, however, give themselves a lot of work to manage to provide quality products.

Conchalliculture professionals in Loire-Atlantique and Vendée have been facing a recurring problem for several years: water contamination by strengthen health security oysters loire-atlantique norovirus. In addition, This pollution. Meanwhile, mainly caused by winter gastroenteritis epidemics and wastewater discharges in farming areas, directly threatens the safety of product shells. Meanwhile, Conchylicultors have in the past, filed a complaint against the Saur and against X.

A new approach to health surveillance for conchyliculture – Strengthen health security oysters loire-atlantique

This Wednesday. Furthermore, July 30, Fabrice Rigoulet-Roze brought together the players in the sector for the signing of a preparatory agreement, at Frédéric Moulin des Mille et One oysters in La Bernerie-en-Retz. In addition, Philippe le GAL President of the National ConchylCulture Committee. Meanwhile, Gers Data, State services and the Regional Health Agency of Pays de la Loire. For example, This unprecedented collaboration aims to develop a reinforced monitoring system to protect consumers and preserve the quality of conchyl products.

A persistent health challenge – Strengthen health security oysters loire-atlantique

Faced with the challenges posed by winter epidemic peaks, the partners explore an original preventive approach. The principle is simple: closely monitor strengthen health security oysters loire-atlantique sales of antidiarrheal drugs in pharmacies.

As soon as a notable increase is detected. measures would be taken immediately to protect the water supply of conchyl operations.

To implement this surveillance. Gers Data, a Ile -de -France company which collects the sales data of 82 % of French pharmacies, has teamed up with the National Conchylicalulture Committee. Together, they will test this system for six months, from November 15, 2025. David Syr. Managing Director of Gers Data, expresses his commitment: “We are proud to participate in this’ a single health approach and to design with the conchyl sector of advanced health indicators. Gers data data constitute a living language which must be exploitable. They only have value if they find a concrete and daily application.”

Strong institutional support

The regional authorities provide their full support for this initiative. Fabrice Rigoulet-Roze. prefect of the Pays de la Loire, salutes this collective mobilization: “Once again, we strengthen health security oysters loire-atlantique observe this capacity for collective mobilization which characterizes the Pays de la Loire. Faced with difficulties, territorial actors know how to unite their forces. It is advisable to salute the commitment of the National. Regional ConchylCulture Committee, professionals from Loire-Atlantique and Vendée, as well as Gers Data, who were able to identify their common needs and build a partnership allowing an experiment in real conditions. We can perpetuate and extend this action on a national scale. ”

Towards a “one health” approach

This initiative goes beyond the strictly conchyical framework to be part of an interministerial vision. of environmental health policies. The “only health” approach recognizes the interconnection between human, animal health and that of ecosystems. The health-environment regional plan of the Pays de la Loire has made this approach a transversal strategic axis. and the experiment which is announced constitutes a concrete application.

The agreement of July 30. 2025 paid the way strengthen health security oysters loire-atlantique to the development of an experimental protocol, with the aim of launching real -time monitoring of drug consumption from November 15, 2025.

Loire-Atlantique waters are permanently monitored

The seashell production areas are regularly controlled in order to ensure the quality of the shellfish from it. the sustainability of the health classification. In Loire-Atlantique, the coast is cut into fifteen surveillance zones.

The following contaminants benefit from follow -up in this context:
• Microbiological contaminants. via the Remi surveillance network;
• Phycotoxinic contaminants, via the REPHY monitoring network;
• Chemical contaminants, via the Rocch surveillance network.

IFREMER coordinates the implementation of observation and surveillance networks of the coastal sea. He publishes a report each year available.

Each shellfish production area, map available, has several surveillance points.

The frequency of samples is variable. Surveillance is organized in two components:
Regular surveillance with bimonthly, monthly, bimonthly or suitable sampling for seasonal farms.

Alert surveillance with enhanced monitoring until the alert system is lifted with strengthen health security oysters loire-atlantique additional direct debits and analysis.