Unusual dog respiratory cases
- Vets and state labs are investigating a stubborn respiratory illness spreading among dogs in multiple U.S. states. - Affected dogs show coughing, sneezing, and eye or nasal discharge that often doesn't respond to antibiotics. - The probe includes lab reports from Oregon, Colorado and New Hampshire as vets warn owners to watch symptoms and avoid group settings if sick (ewash.org, buffalonews.com)
Veterinarians and state labs are still trying to pin down an unusual dog respiratory illness that surfaced in Oregon and spread into reports from Colorado, New Hampshire, and other states. (avma.org) The cases first drew wide attention in August 2023, when the Oregon Department of Agriculture began receiving reports from the Portland metro area and Willamette Valley. By mid-November 2023, Oregon had logged more than 200 reports from veterinarians. (avma.org) Dogs in these clusters often had coughing, sneezing, eye or nose discharge, and pneumonia that lasted longer than the usual run of “kennel cough.” The New Hampshire Veterinary Diagnostic Laboratory said some cases did not respond to standard treatment and did not test positive for the common respiratory pathogens vets usually look for. (colsa.unh.edu) The baseline problem is common: canine infectious respiratory disease complex is the catchall name for contagious dog cough illnesses caused by several viruses and bacteria. Colorado State University said there are at least 10 common causes, which makes a stubborn cluster hard to sort out quickly. (vetmedbiosci.colostate.edu) Colorado veterinarians reported that, in some months of 2023, more dogs developed pneumonia and coughs that lingered longer than normal. The American Veterinary Medical Association said Colorado State University’s teaching hospital saw more than double the canine pneumonia cases from September through November 2023 compared with the same period in 2022. (vetmedbiosci.colostate.edu, avma.org) New Hampshire researchers took a genomic approach, sequencing samples from affected dogs to look for hidden microbes the standard tests might miss. University of New Hampshire investigators said in a January 25, 2024 update that the syndrome reflected a shared clinical pattern, but the work had not produced a single confirmed cause. (colsa.unh.edu) By February 14, 2024, Colorado’s agriculture department said the increase in canine respiratory cases had “significantly decreased” from the surge seen in late 2023. The American Veterinary Medical Association also reported that Oregon saw no new reports for the month of January 2024. (ag.colorado.gov, avma.org) That drop did not settle the underlying question of whether this was a new disease or a rough season of familiar ones. Veterinary experts told the American Kennel Club and the American Veterinary Medical Association that outbreaks of canine respiratory disease are cyclical, and that uneven testing and reporting make national case counts difficult to measure. (akc.org, avma.org) The practical advice has stayed consistent: keep dogs current on vaccines, avoid boarding, day care, dog parks, and grooming appointments if a dog is coughing, and call a veterinarian early if breathing worsens or appetite drops. Colorado State University said most dogs recover, but pneumonia cases need prompt veterinary care. (vetmedbiosci.colostate.edu) What remains unresolved is the same question that drove the first alerts in 2023: whether investigators were seeing one new culprit, several old pathogens behaving differently, or a mix of both. State agencies and veterinary labs have kept pointing owners back to symptoms, not headlines, as the clearest signal to act. (avma.org, colsa.unh.edu)
