You are here Home Glossary of technical terms Glossary of technical terms vaccine Listen Print Share Twitter Facebook Email A product often made from extracts of killed viruses or bacteria, or from live, weakened strains of viruses or bacteria. A vaccine can stimulate an immune response that protects against natural infection. Page history Last updated 11 June 2018 Last reviewed 11 June 2018 Is there anything wrong with this page? Help us improve the Australian Immunisation Handbook What you were doing? (required) What went wrong? (required) Leave this field blank