Guidance for Public Health
The links below provide information and guidance for local and state public health officials regarding the surveillance and investigation of human infections with H3N2v. Information and guidance for public health laboratorians regarding the identification, interpretation and reporting of laboratory data during an H3N2v outbreak also is available.
Guidance for State and Local Public Health Partners
- August 3, 2012 CDC Health Advisory: Increase in Influenza A H3N2v Virus Infections in Three U.S. States
- Interim Guidance for Enhanced Influenza Surveillance: Additional Specimen Collection for Detection of Influenza A (H3N2) Variant Virus Infections
- Interim Guidance on Specimen Collection, Processing, and Testing for Patients with Suspect Influenza A(H3N2)v Virus Infection
- Interim Guidance on Case Definitions to be Used For Investigations of Influenza A(H3N2)v Virus Cases