VAC2VAC is a wide-ranging collaborative research project funded by IMI2 which aims to develop and validate quality testing approaches for both human and veterinary vaccines using non-animal methods. The initiative that started on 1 March 2016 aims to provide the data to support the "Consistency Approach" for quality control of established vaccines, where current quality control approaches are often relying on in vivo methods.

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VAC2VAC is a public-private consortium of twenty partners, involving experts from veterinary and human vaccine industry in a partnership with official medicines control laboratories, academia, translational research organisations, and vaccinology alliances. To achieve their goal, the project partners will develop, optimise and evaluate physico-chemical and immunochemical methods, cell-based and other assays for routine batch quality, safety and efficacy testing of vaccines. This will be done in collaboration and consultation with regulatory agencies. The ultimate goal of the project is to develop tests and approaches that will allow acceptance of the "Consistency Approach" for established vaccines by the regulatory agencies and thereby significantly reducing in the future the use of animals for batch testing in routine vaccine production.