A woman in Falun, Dalarna, became infected with cowpox after her cat fell ill and was euthanized—reportedly the first known case in Dalarna. She was on sick leave for a month and is sharing her story to warn others about this rare zoonotic infection.

Hundreds of Atlantic salmon and sea trout have died in the Gaula River in Midtre Gauldal, Trøndelag. Researchers suspect a severe outbreak of egg-spore water mold (Saprolegnia) and are investigating the scale and causes.

Chikungunya is found mostly in tropical and subtropical regions, according to the state health department. Its symptoms include fever and joint pain, headache, muscle pain, joint swelling and rashes. It’s the first case in the U.S. in six years.

A fox euthanized after abnormal behaviour in Arviat, Nunavut, has tested positive for rabies, prompting health officials to warn residents to report unusual animal behaviour and seek immediate care after bites or scratches.

An emaciated Arctic fox found dead at Vindodden in August tested positive for avian influenza, not rabies, according to the Norwegian Veterinary Institute.

Highly pathogenic avian influenza (H5N5) was confirmed in multiple dead gulls found at Blönduós and in a female duck found dead at Sauðárkrókur in North Iceland. Authorities urge biosecurity for poultry, public reporting of dead or sick wildlife, and caution by hunters.

Idaho Fish and Game confirmed epizootic hemorrhagic disease (EHD) and bluetongue in deer across North Idaho’s Panhandle amid hot, dry conditions, with similar outbreaks reported in Eastern Washington and southeastern Montana. Officials report hundreds of sick or dead deer and expect cases to rise until a hard freeze reduces biting midge vectors.

Washington wildlife officials report outbreaks of epizootic hemorrhagic disease (EHD) and bluetongue in Eastern Washington deer, linked to hot, dry conditions that favor biting midges. Hunters and residents are urged to report sick or dead deer.

High-pathogenic avian influenza was confirmed on 4 September at an egg farm in Hadsel, Nordland, Norway, with 7,500 laying hens to be culled. Authorities established 3 km and 10 km control zones; human infection risk is assessed as very low.

West Nile virus was detected in mosquito samples north of Moses Lake, Grant County, Washington—the first county detection since 2023. Mosquito control increased larvicide and adulticide treatments; officials advise prevention steps and note no recent human cases in the county.

Alaska health officials issued an alert after wild shellfish from Kachemak Bay’s inner bay tested above regulatory limits for paralytic shellfish poisoning toxins. Residents are warned not to harvest or eat untested wild shellfish; monitoring and test results are being posted by the Alaska Harmful Algal Bloom Network.

Residents in Tromsø find sick and dead seagulls after avian influenza detection and urge the Norwegian Food Safety Authority to deploy a weekend gull watch.

Crews plan to burn a bison carcass suspected of anthrax on Highway 3 between Fort Providence and Behchokǫ̀ this weekend, with lab results pending; drivers are warned of smoke and reduced visibility.

Avian influenza was confirmed in four seagulls in Tromsø, Norway, prompting authorities to advise the public against handling dead or sick birds without protection.

Alaska Fish and Game shot two young Dall sheep near Salcha after potential exposure to Mycoplasma ovipneumoniae to prevent disease spread threatening the state’s declining population.

High pathogenic avian influenza was detected in a wild black-backed gull in Vadsø, Norway.

More than 860 young reindeer were driven from the Chaunskoye breeding farm to the municipal enterprise 'Named after the First Revkom of Chukotka'; the 200+ km trek to the Ust-Bel tundra took two weeks and marks the enterprise's first herd renewal in 37 years after a long brucellosis quarantine was lifted.

Gällivare municipality warns of suspected cases of swimmers’ itch after bathers developed itchy skin eruptions following a dip in Abborrtjärn.

Highly pathogenic avian influenza was confirmed in four Arctic fox pups near Barentsburg, Svalbard—the first detection of bird flu in Arctic foxes in Norway. Sick cubs and adult foxes were euthanized to prevent further spread.

Infectious salmon anemia (ILA) has been confirmed at a SalMar aquaculture facility in Trettevik, Senja municipality in Troms, triggering a 10–20 km restriction zone to prevent disease spread.