The use of animals in vaccine testing for humans
"The working party recognises the enormous benefits which have been, and continue to be, afforded to human health by the development and use of vaccines, and accepts that thorough and scientifically sound testing of vaccines is essential."
"Replacement of animal tests for vaccine testing with humane alternatives, not involving the use of animals, is generally agreed to be the ultimate objective of everyone involved. However, the development of reliable non-animal test methods is hampered by an imcomplete understanding of the detailed biological processes involved in immunisation and the complex interactions that occur in a living body. Achieving the goal of replacing animals in many types of vaccine testing, for example with cell culture techniques or computer-based methods, will require significant advances in scientific knowledge and techniques, and progress in replacement of animal tests tends to be difficult and slow".