Luxembourg had detected no cases of bird flu in poultry or wild birds since the start of the autumn migration, according to ALVA’s update on 13 November, reported by L’essentiel. That does not remove the need to protect flocks: new cases have been reported in Belgium, France, Germany and the Netherlands. The issue also affects individuals who keep a few hens.
The risk arises where wild birds, domestic animals and human activity meet. It is not enough to watch for a bird entering an enclosure: equipment, footwear and feed are also part of prevention.
An autumn with no detections does not mean a year without cases
The timing matters when interpreting the news. The statement from the Luxembourg Veterinary and Food Administration describes the situation since the start of the 2026 autumn migration. It does not mean the country has lasting immunity.
Luxembourg was already affected during the previous season. On 20 May, ALVA announced that a fox had tested positive for the H5N1 virus. It considered it very likely that the fox had been infected after eating an infected bird. The document also noted that the virus had circulated among wild birds in Luxembourg between autumn 2025 and spring 2026.
Monitoring therefore does not focus solely on chicken coops. Since 2022, ALVA and the Luxembourg Institute of Health have been monitoring mammals that prey on birds. The fox case illustrates one possible route of transmission between species; it does not allow us to conclude that all mammals have been infected. To understand a health report, the period, the species examined and what was actually detected must all be considered together.
Why prevention starts before entering the chicken coop
Avian influenza is a highly contagious viral disease that affects poultry and wild waterbirds, among others. In its introduction to the prevention campaign on 5 November, the agriculture portal notes that the movements and gatherings of migratory birds encourage contact during the winter period.
It reports nearly 8 000 outbreaks detected in Europe between October 2025 and June 2026. This total describes a past season, not the figures for November. In poultry farms, infections during this period were mostly the result of indirect contact with wild birds.
‘Biosecurity’ refers to precautions designed to prevent the introduction and spread of an infectious agent. The term may seem to apply only to large farms, but the same principle applies to a small flock. A fence and birds that appear to be in good health are not enough to account for every risk of transmission. Prevention also means managing access, objects and everyday practices.
Practical habits, even for small flocks
The EFSA’s European #NoBirdFlu campaign offers several practical guidelines: restrict access to the people and equipment that are necessary, wear clean clothing, and clean and disinfect footwear. Objects brought in from another poultry environment also require particular attention.
EFSA recommends separating areas where animals are kept from outdoor spaces, keeping feed safe from contamination and providing clean water. Chickens, ducks and turkeys should have separate areas; other animals should be kept away from poultry. The campaign is aimed at farmers, as well as small-scale keepers and professionals who visit facilities.
In practice, protection requires ongoing checks: a net that is in place is not necessarily intact. The Luxembourg portal advises checking for holes and gaps, cleaning facilities regularly and avoiding standing water around the farm. Effectiveness depends on a series of consistent precautions rather than a single piece of equipment.
In Luxembourg, distinguish advice from requirements
ALVA recommends protecting outdoor runs; if this is not possible, it advises keeping poultry indoors. Feed and water should be kept out of reach of wild birds. This reminder should not be turned into an announcement of a general compulsory confinement.
However, every keeper must register their premises with ALVA. Importing poultry requires a TRACES health certificate, including after a purchase at a market. Any unusual mortality, or a drop in egg production or feed consumption, must be reported to a vet without delay.
For a wild waterbird or bird of prey found dead or ill, contact ALVA on 247 82539 or at info@alva.etat.lu. EFSA recommends avoiding contact with potentially infected animals. The role of the public is to report the situation; seeing a sick animal does not, by itself, make it possible to identify the virus.
Guidance may change as detections are made. The best point of reference is therefore the latest advice from Luxembourg’s veterinary authority, without automatically applying to the Grand Duchy restrictions imposed in a neighbouring country.
Illustrative photo: hens in an outdoor enclosure, June 2008. This photograph does not depict an outbreak of bird flu in Luxembourg. woodley wonderworks / Wikimedia Commons, CC BY 2.0.
