Veterinary Vaccine Quality Control Sees Decade-Low in Animal Usage

Recent statistics released by the Veterinary Medicines Directorate (VMD) reveal a significant reduction in the number of animals used for the testing of veterinary vaccines compared to a decade ago. As of 2024, the average number of animals required to ensure the quality, safety, and efficacy of a single batch of animal vaccines has decreased by 41%, dropping from 29 animals in 2013 to just 17.

Overall, the use of animals in vaccine testing has declined by 29% during the same timeframe, even as the number of vaccines being introduced has risen. This shift can be attributed to scientific advancements and modifications in testing protocols that allow for the replacement of animal testing with alternative methods. These developments ensure that farmers, veterinarians, and pet owners still have access to safe and effective vaccines to guard against animal diseases.

Significant Milestones in Animal Testing Reduction

A landmark change highlighted in the report was the abolishment of the routine Target Animal Batch Safety Test in 2013, which resulted in a substantial decrease in the number of animals used each year. The findings indicate that traditional testing methods involving horses, cats, dogs, turkeys, and pigeons have been eliminated from routine quality control procedures. Moreover, newly authorised vaccines are increasingly adopting animal-free testing methodologies.

The report also noted a dramatic decline in the percentage of veterinary vaccines that require any animal testing as part of their quality control process, plummeting from 74% in 2013 to just 34% in 2024. This progress aligns with the government’s commitment to minimising and eventually phasing out the use of animals in scientific research, while still ensuring that vaccines are available to protect animal health, prevent zoonotic diseases, and support agricultural communities.

Government Support for Animal Welfare Initiatives

Baroness Hayman, the Minister for Biosecurity and Trade, commented on this progress, stating, “This is real progress for animal welfare. We are using far fewer animals to ensure that veterinary vaccines are safe and effective, which is encouraging news for animal lovers across the country, myself included.” She emphasised that advancements in science enable a reduction in animal testing while continuing to provide essential vaccines for farmers, veterinarians, and pet owners, crucial for maintaining animal health and curbing disease transmission.

Abi Seager, Chief Executive Officer of the Veterinary Medicines Directorate, expressed pride in contributing to the UK’s strategy for phasing out animal use in scientific testing. “This report illustrates twelve years of sustained, measurable progress in reducing animal testing within the veterinary medicines sector,” she noted. Seager reiterated the commitment to further reductions and the ongoing collaboration with the animal health industry to replace animal-based testing wherever scientifically feasible.

Challenges Remain in Vaccine Testing

Despite these advancements, animal testing has not been entirely eliminated for all types of veterinary vaccines. Certain vaccines, including specific clostridial and fish vaccines, still face challenges in developing non-animal alternatives that are scientifically viable. Ongoing collaborations among scientists, regulators, and the veterinary medicines industry aim to innovate and approve new testing methods that can further decrease animal use without compromising the safety, quality, or efficacy of veterinary vaccines.

This announcement follows the recent publication of the UK government’s strategy for replacing animals in scientific testing, which outlines a long-term commitment to phasing out animal testing by 2025.