Avian Influenza Detected in Dalen

Within the 3-kilometer zone, there is one poultry farm. However, this farm is currently empty because it was culled due to a previous avian influenza infection (December 4, 2025). Within the 10-kilometer zone, there are 8 other poultry farms.

A transport ban is immediately in effect throughout the entire 10-kilometer zone. This means that no birds, hatching eggs, or consumption eggs may be transported from locations with birds in this zone. There is also a ban on the removal of manure from birds and used litter. These measures are necessary to prevent the spread to other parts of the country. Other animals than birds and their products may be transported to and from locations with birds provided this is done according to the strict conditions of the hygiene protocol.

The location of the 10-kilometer zone can be seen on the animal disease viewer of the Netherlands Enterprise Agency (RVO).

Since October 16, 2025, a national housing and shielding obligation has been in effect in the Netherlands. The housing obligation applies to all commercially kept birds. The shielding obligation applies to non-commercially kept risk birds (for example, hobby chickens).

Since November 26, 2025, the national visitation ban for bird premises that are part of a commercial bird holding has been tightened. Visits to these premises are only allowed if the visit is necessary for public health, animal health, animal welfare, or the health of persons present in the barn.

The NVWA is conducting tracing investigations into risky contacts. This investigates whether products or poultry have been transported to and from this location in the period prior to the report. If necessary, additional measures will follow, such as extra sampling or blocking a risky contact company. These measures will be announced via an update in this press release and through the online channels of the Ministry of Agriculture, Fisheries, Food Security and Nature (LVVN).