Virulence 8 : The degree of pathogenicity of a micro-organism, as indicated by the severity of the disease produced and its ability to invade the tissues of a host
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}