| − | A combination vaccine is two or more [[vaccine]]s administered at once in order to reduce the number of shots given. For example, the MMR (measles, mumps, rubella) vaccine is a combination vaccine.<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#c</ref> | + | A '''combination vaccine''' is two or more [[vaccine]]s administered at once in order to reduce the number of shots given. For example, the MMR (measles, mumps, rubella) vaccine is a combination vaccine.<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#c</ref> |