In March 2019, the Swedish National Veterinary Institute (SVA) diagnosed the first case of CWD in Sweden. A 16-year old emaciated female moose was found in the municipality of Arjeplog in the county of Norrbotten, circling and with loss of shyness towards humans, possibly blind. The moose was euthanized and the head was sent for CWD screening in the national CWD surveillance program. The brainstem tissue, but not lymph nodes, was positive for CWD (confirmed with Western Blot). A second case of CWD was diagnosed in May 2019, with very similar case history, about 70 km east of the first case. This second case, in the municipality of Arvidsjaur, was also an emaciated and apathic 16-year-old female moose that was euthanized. The circumstances of these Swedish cases are similar to the CWD cases in moose in both Norway and Finland. The EU regulated CWD surveillance runs between 2018 - 2020. A minimum of 6 000 deer are to be tested, both free-ranging animals in the deer family, farmed red deer, and semi-domesticated reindeer. The finding of CWD-positive moose initiated an intensified surveillance in the affected municipalities. Adult hunter-harvested moose and slaughtered semi-domesticated reindeer from the area are tested for CWD. In September 2019, a third moose was found positive for CWD, a hunter-harvested 10-year-old apparently healthy female moose from Arjeplog. A fourth case of CWD in moose was verified in September 2020, in a euthanized 14-year-old lame and unshy female moose in the municipality of Robertsfors, in the county of Västerbotten, approximately 200 km from the previous moose cases in the neighboring county of Norrbotten.