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Vaccination is the injection of a killed or weakened infectious organism in order to prevent the disease.<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#v</ref>
'''Vaccination''' is the [[injection]] of a killed or weakened infectious organism in order to prevent the [[disease]].<ref>http://www.cdc.gov/vaccines/about/terms/glossary.htm#v</ref>
==References==
==References==