Bird Flu Risk Falls Across Europe: What Lower Prices Mean for Portugal Residents

The French Ministry of Agriculture has downgraded the country's avian influenza risk level from "high" to "moderate" as of April 27, marking a significant shift in policy after seven months of stringent confinement measures. The decision, published in the official gazette on April 26, signals what authorities describe as an improved epidemiological outlook across France's poultry sector—a development with direct implications for trade, biosecurity protocols, and production costs across the Iberian Peninsula.

Why This Matters

• Trade and supply chains: France's upgraded status may ease movement restrictions for poultry products, potentially affecting import prices and availability in Portugal.

• Regional surveillance: The downgrade comes as Portugal lifted its own confinement mandate on April 20, suggesting coordinated improvement along the Atlantic corridor.

• Economic pressure: The 2025–2026 season saw 121 outbreaks in French commercial farms and approximately 1.8 M birds culled by January—costs that ripple through European markets.

• Vaccination questions: Detection of the H5N1 virus in vaccinated duck farms in western France underscores ongoing challenges to containment strategies.

What the Risk Categories Mean

France's veterinary authorities classify avian flu exposure for domestic and captive birds into three tiers: negligible, moderate, and high. Each tier triggers specific protocols, from routine monitoring at the low end to mandatory indoor housing of all poultry at the peak.

The high-risk designation had been in effect since October 17, 2025—an unusually early activation compared to previous years, when such measures typically waited until late November or December. That elevated status required producers to confine flocks indoors, halting free-range operations and limiting movement of birds and related products. The shift to moderate risk allows controlled relaxation of those restrictions, including eased movement regulations and a return to outdoor rearing under reinforced biosecurity measures.

Outbreak Timeline and Geographic Hotspots

Between August 2025 and April 16, 2026, French authorities confirmed 121 outbreaks in commercial poultry facilities nationwide, concentrated in the western departments. An additional 30 cases were recorded in backyard flocks and non-commercial captive birds during the same window.

French veterinary services have designated two permanent high-risk zones where natural conditions—migratory flyways, wetland habitats, and dense poultry production—create persistent contamination threats. The first spans the departments of Pyrénées-Atlantiques and Landes, just kilometers from the Spanish border in the Basque region. The second runs along the Atlantic coast through Vendée, Maine-et-Loire, and Deux-Sèvres. These areas remain under enhanced surveillance regardless of the national risk level.

When a case is detected, protocol mandates immediate culling of all birds in the affected facility, followed by deep cleaning and disinfection. Preventive culling within a defined perimeter may also be ordered, depending on outbreak severity and proximity to other farms.

Economic Fallout and Vaccination Debate

The current season's outbreak wave inflicted substantial damage. By early January 2026, authorities reported 112 outbreaks since October and the destruction of roughly 1.8 M birds. The financial toll echoes past crises: a 2021–2022 epidemic required slaughter of more than 20 M birds, while 2022 saw foie gras output drop 35%. Industry observers estimate aggregate losses from large-scale outbreaks can exceed €1 billion.

A controversial policy shift in April 2025 saw the French government slash its financial contribution to the mandatory vaccination campaign from 70% to 40%, sparking anger among producers who warned the move could undermine biosecurity cohesion and elevate zoonotic risk. France launched a nationwide vaccination effort in 2023, focusing on breeding ducks, and was the first major global poultry exporter to do so. That campaign is credited with reducing infection rates and enabling the resumption of outdoor rearing in March 2025.

Yet the detection of H5N1 in vaccinated duck herds in western France in early 2026 has reignited debate over vaccine efficacy and the limits of immunization as a standalone control measure. The breakthrough infections suggest the virus may be evolving faster than current vaccine formulations can contain.

France also lost its "HPAI-free" status in December 2024 and again in early January 2025 following fresh outbreaks, a designation that triggers trade restrictions from importing countries and complicates market access for exporters.

Iberian Context and Cross-Border Coordination

The European Commission updated avian flu control measures in mid-January after 60 new outbreaks were reported across the bloc, including one in Portugal's Santarém district, in the municipalities of Tomar, Torres Novas, and Vila Nova da Barquinha. Countries notifying Brussels of fresh cases included Belgium, Bulgaria, Denmark, Germany, Spain, Italy, Hungary, the Netherlands, Poland, the Czech Republic, and Sweden.

Portugal's veterinary authority (DGAV) lifted confinement requirements on April 20, citing gradual epidemiological improvement across the EU and a sharp decline in reported outbreaks. The decision came one week before France's downgrade. During the 2025–2026 season, Portugal confirmed 26 outbreaks—16 in domestic birds (11 on commercial farms) and 10 in wild birds. The country regained HPAI-free status on March 13, following successful eradication of outbreaks detected between September and December 2025.

Spain partially suspended confinement on April 1, after recording 16 farm outbreaks since July 2025, the last on January 13 in Lleida, Catalonia. The Spanish Ministry of Agriculture lifted the national confinement order but maintained restrictions in 1,201 of 8,132 municipalities classified as special-risk zones. Spain was declared HPAI-free by the World Organisation for Animal Health (WOAH) on February 10, allowing unrestricted movement of poultry products within the EU.

The Iberian Peninsula has recorded significantly lower outbreak numbers this season than northern European countries, where the aggressive H5N1 strain has spread rapidly. Still, Portugal maintains tighter restrictions on poultry fairs and markets than Spain, requiring separation by species and health certifications for exhibiting birds.

What This Means for Residents

For consumers in Portugal, France's risk downgrade may eventually translate to price stabilization in imported poultry and egg products, as eased movement restrictions reduce logistical bottlenecks and insurance costs. However, biosecurity protocols remain in force across the EU, and authorities warn that viral circulation has not ceased entirely.

Producers and smallholders should continue adhering to biosecurity best practices: limiting contact between domestic flocks and wild birds, disinfecting equipment, and reporting unusual mortality promptly. Portugal's DGAV has maintained that the virus likely remains in circulation despite reduced outbreak frequency, and vigilance is critical heading into the next migratory season.

The evolving situation also highlights the fragility of export markets dependent on sanitary certifications. Any fresh outbreak could trigger renewed confinement orders, as seen in France's early October activation, and reset the clock on regaining HPAI-free status. For anyone invested in poultry, either commercially or as backyard enthusiasts, the message is clear: the threat has diminished, but it has not disappeared.