Dutch health authorities said Thursday they had culled around 300,000 chickens after the largest outbreak of highly contagious bird flu this year, saying almost six million birds have been killed so far in the ongoing epidemic.
The latest outbreak of a highly contagious H5 strain of the virus hit a chicken farm at Heythuysen in the southern Limburg province, the Dutch food security agency NVWA said.
"We have immediately instituted a ban on transport" of all poultry products, the NVWA said, adding it included eggs, bird meat and bird manure.
Five other poultry farms within a radius of five kilometres (three miles) "are being screened and will be monitored for bird flu for the coming two weeks," the agency said in a statement.