Resources References Last modified Syndromic Surveillance 101 Jun 11, 2019 Legal Responses May 29, 2019 SDC_Syndrome Definition Guidance document_FINAL-2.pdf Apr 24, 2019 Companion Guide_Data Access Rules_ss 5.23.2019 Rev 1.pdf May 31, 2019 Knowledge Repository Apr 27, 2019 CDC Opioid Definition v2.docx May 23, 2019 CDC Stimulant Definition v2.docx May 23, 2019 CDC Heroin Definition v4.docx May 23, 2019 CDC All Drug Definition v1.docx May 23, 2019