The University of Copenhagen sequenced the genomes of 442 ancient humans from all over Europe and Greenland, ranging from the Bronze Age (circa 2400 BC) to early modern times (circa 1600 AD)  The study found that during the Viking era, foreign genes from the south and east flowed into Scandinavia  The study also found evidence that Vikings moved outside Scandinavia: Vikings from Denmark moved to England, Vikings from Sweden sailed eastward towards the Baltic countries, and Vikings from Norway moved to Ireland, Iceland and Greenland
In addition, their genetic analysis included samples of blood related to modern Swedes and modern Danes
Iceland is not a Scandinavian country.