| − | An outbreak in medical terminology means a sudden appearance of a [[disease]] in a specific geographic area (e.g. neighborhood or community) or population (e.g. adolescents).<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#o</ref> | + | An '''outbreak''' in medical terminology means a sudden appearance of a [[disease]] in a specific geographic area (e.g. neighborhood or community) or population (e.g. adolescents).<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#o</ref> |