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Bird flu at Dutch poultry farms from autumn 2021

Published on
November 21, 2021

Wageningen Bioveterinary Research (WBVR) has confirmed yet another outbreak of bird flu in the Netherlands. Highly pathogenic H5N1 avian influenza was found in laying hens at a poultry farm in Vinkeveen. To prevent the virus from spreading, the Dutch Food and Consumer Product Safety Authority (NVWA) culled all 10,000 animals at the site.

WBVR will investigate the genetic composition of the virus and links to viruses found since October 2021 in the Netherlands.

Very high risk of infections at poultry farms

The Rapid Risk Assesment (in Dutch) of November 2021 by WBVR indicates a very high risk for HPAI bird flu infections at commercial poultry farms in the Netherlands.

Housing requirement

As a result of the first outbreak in Zeewolde on 26 October, a housing obligation was set in place by the government for all commercial poultry farms in the Netherlands. Zoos, petting zoos and hobby farmers are required to fence off their poultry and waterfowl to prevent contact between these birds and diseased wild birds or their droppings.

A nationwide ban applies to exhibiting poultry and waterfowl and visits to bird accommodation where at-risk birds are kept.

Infections from autumn 2021

Tables: Highly pathogenic avian influenza (HPAI) infections as of October 2021 at Dutch poultry farms and hobby farms with 50 or more birds.

Highly pathogenic bird flu at commercial poultry farms

Location Type of farm Number of animals Type Date
Vinkeveen Laying hens 10,000 H5N1 21 Nov 2021
Tzum Broilers 122,500 H5N1 14 Nov 2021
Lutjegast Laying hens 48,000 H5N1 8 Nov 2021
Zeewolde Meat ducks 21,000 H5N1 5 Nov 2021
Zeewolde Meat ducks 10,000 H5N1 4 Nov 2021
Grootschermer Broilers 107,000 H5N1 30 Oct 2021
Zeewolde Laying hens 36,000 H5N1 26 Oct 2021

Highly pathogenic bird flu at large hobby farms

Location Type of farm Number of animals Type Date
Parrega Private owner 200 H5N1 3 Nov 2021
Assendelft Small-scale farm 190 H5N1 1 Nov 2021

This page was last updated on November 23