Shellfish from a specific region in France has been linked to gastrointestinal symptoms, leading to a withdrawal of shellfish from sale and a warning not to consume them. This measure will particularly impact oyster farmers, who rely heavily on end-of-year sales. The issue is exacerbated by a combination of severe weather causing sewage and stormwater overflows, which has contaminated breeding areas and led to an "unprecedented economic crisis" for the industry.