According to the consumer protection authorities, 1,203 wild birds have been officially tested for the disease using PCR over the past ten years. The result was positive in 133 animals. There have been two outbreaks in kept birds in the past ten years. One of them was at a small poultry farm, the other at the Zoological Garden. According to the report, wild birds are primarily affected in Berlin. "The number and size of domestic poultry flocks in Berlin are rather small," it said. Once a risk assessment has been carried out by the relevant veterinary authorities, appropriate measures can be ordered if necessary.