You are here Home Glossary of technical terms Glossary of technical terms pandemic influenza Listen Print Share Twitter Facebook Email A global epidemic that results when a new strain of influenza virus appears in the human population. It causes more severe disease in the population because few people have immunity to the new strain. 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