Breakthrough Treatment Offers Hope for Dogs with Insect Sting Allergies

In a breakthrough for canine medicine, a new treatment for insect sting allergies in dogs is being offered by the University of Glasgow's Small Animal Hospital. This treatment, known as Hymenoptera Venom Immunotherapy (VIT), is a game-changer for families whose beloved pets have suffered severe reactions to bee or wasp stings.

The story of Amber, a Vizsla who became the first dog in the UK to receive VIT, is a testament to the effectiveness of this treatment. Amber's family, the Preeches, were unaware that a bee had flown into their home through an open window, causing Amber to break out in hives and vomit. By the time they reached the vet, Amber was in full anaphylactic shock.

Insect venom allergy in dogs is a serious acute allergic emergency, with reactions developing within minutes of a sting. While most reactions are limited to swelling, hives, or vomiting, a small number can progress rapidly to collapse, respiratory distress, and death.

The real incidence of this allergy in dogs is not fully known, but it is believed to be similar to that in humans, which is around 0.3-7.5%. What makes insect stings particularly dangerous is what happens after a dog survives that first severe reaction. Nearly two-thirds of dogs who experience one severe response to a bee or wasp sting go on to have similar or worse signs the next time they're stung.

To understand how VIT works, it helps to understand what an allergic reaction actually is. Normally, a dog's immune system ignores harmless substances in the environment, and mounts localized attacks on potentially harmful threats such as viruses, bacteria, or insect venom. In an allergic or hypersensitive dog, the immune system 'overreacts', mounting a powerful defence against relatively inert substances, releasing chemicals like histamine that cause blood vessels to leak fluid, airways to narrow, and skin to swell or break out in hives.

VIT works by exposing that oversensitive system to tiny, carefully measured amounts of venom, slowly increasing the dose over time until it learns to stop treating a small incursion as a five-alarm emergency. This treatment is not intended for every dog that's ever been stung, but specifically for dogs who've already had a moderate or severe systemic reaction, and whose pet parents want to reduce the risk of it happening again.

The data that exists on VIT in dogs is encouraging, with a 2023 prospective clinical trial led by Professor Ana Rostaher showing that 10 dogs with a history of severe allergic reactions to bee or wasp stings underwent the same rush-induction VIT protocol now being used in Glasgow. All 10 completed the induction phase without serious adverse events. Of the seven dogs later exposed to a re-sting, either accidentally or through a supervised in-clinic challenge, six had no reaction at all, and the seventh developed only a mild, localized swelling that resolved within a day with standard antihistamine treatment.

While access to VIT is still limited to a small number of specialist centers, the field is expanding, and the team at Glasgow intends to grow the program further. For families who've lived through the fear of a repeat episode, this treatment offers a lifeline, providing a way not just to treat the condition, but to prevent the next emergency before it happens.

| Treatment Center | Location | | --- | --- | | University of Glasgow's Small Animal Hospital | UK | | Other specialist centers | Worldwide |

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Dr. Paola Cuevas is our Senior In-House Veterinarian at Dogster and Pangolia. She has over 19 years of experience working with an array of species and loves sharing her knowledge and experience with our readers and aims to provide assistance with any issue presented by your non-human family members. She received her degree from the University of Guadalajara, Mexico.

Her passions are animal welfare and preventive medicine, and has skills in the fields of nutrition, microscopy, clinical pathology, diagnostic imaging, and endoscopy. Paola frequently contributes pet care insight to various media outlets like PetMD, The Daily Record, Parents.com, etc.

Paola is also an animal behaviorist with extensive experience in positive reinforcement animal training.