A white-tailed eagle and an eider duck found dead in Iceland in September both tested positive for a severe strain of bird flu that has never been detected in Iceland before. The risk of infection for poultry and other other birds in captivity is low, according to the Food and Veterinary Authority.
Samples taken from a white-tailed eagle found dead on a skerry near Barðaströnd in the Westfjords in mid-September tested positive for a severe bird flu virus of the strain HPAI H4N5. An eider duck that was found dead in Ólafsfjörður, West Iceland recently was infected with the same strain of bird flu virus. The strain has not been detected in Iceland before and is not common.
Spread of bird flu low
The samples were studied at the University of Iceland’s Keldur Institute for Experimental Pathology. The results underline the importance of ensuring good infection prevention when dealing with poultry and other birds in captivity. Based on the data available at this point in time, however, it can be assumed that the spread of avian influenza viruses is low in Iceland and the risk of infection for poultry and other birds in captivity is therefore low.
Sequencing may determine origin
Few reports of sick or dead wild birds have been received by the Food and Veterinary Authority (MAST) since spring, after reports of widespread bird deaths among kittiwakes, puffins, and other seabirds subsided. Sample tested by MAST ruled out bird flu as the cause of those deaths.
As of July, only five samples have been taken from wild birds. Three of them tested negative for bird flu, while the two mentioned above tested positive. Researchers are hoping to sequence the samples of the viruses in order to determine whether the new strain arrived from Europe or from migratory birds arriving in late summer from nesting sites in the western Atlantic. HPAI H5N5 has been detected in only four samples in Europe recently, all from wild birds in Norway and Sweden, and in a few samples from wild birds, red foxes, and skunks in eastern Canada.
The Food and Veterinary Authority (MAST) reminds the public that reporting sick and dead wild birds is a key element in monitoring the presence and spread of bird flu.