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This Web page is no longer being maintained or updated; it is provided for historical purposes only. For current information on seasonal influenza (flu), see the California Department of Public Health Influenza Web page.

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 H1N1 Flu Information

H1N1 Flu Information for Local Health Departments

CDPH Guidances and Recommendations

All CDPH Guidances for H1N1 Influenza - by Date and by Topic

  • CDPH Guidance: Laboratory Testing and Reporting of 2009 H1N1 and Seasonal Influenza in the 2009-2010 Flu Season (PDF) Opens in a new browser window. - January 28, 2010
  • CDPH Guidance: 2009 H1N1 and Seasonal Influenza - Guidance for Reporting of Cases, Vaccine Adverse Events, and Outbreaks in the 2009-2010 Flu Season (PDF) Opens in a new browser window. - January 25, 2010 
  • Guidance for Infection Control for 2009 H1N1 Influenza in Health Care Settings (PDF, New Window)  - CDPH and Cal/OSHA Joint Statement, January 12, 2010 
  • Cal/OSHA Alert: State Recall of 3M 8000 Respirator Issued From Stockpile (PDF) Opens in a new browser window - January 5, 2010 Alert icon
  • CDPH Health Alert November 3, 2009 (PDF)Opens in a new browser window.
  • CDPH Health Alert November 3, 2009 Influenza – Attachment 1 - Report of Severe Illness (ICU Admission) or Death in Pregnant and PostPartum Women (Word)Opens in a new browser window.
  • CDPH Health Alert November 3, 2009 Attachment 2 - Draft Mail Template (Word)Opens in a new browser window.
  • CDPH Guidance for Responses to Influenza for Institutions of Higher Education during the 2009-2010 Academic Year (PDF) Opens in a new browser window.
  • CDPH Interim Guidance on Distribution of State and Federal Stockpiles of N95 Respirators for H1N1 (2009) Influenza Pandemic (PDF) - Opens in a new browser window.October 22
  • Also see: Cal/OSHA Interim Enforcement Policy on H1N1 and Section 5199 (Aerosol Transmissible Diseases)(PDF)Opens in a new browser window. Appendix A (PDF) Opens in a new browser window.- October 22
  • Guillain-Barré Syndrome (GBS) Surveillance Project - October 13 
  • CDPH Forms

  • CDC Guidances and Recommendations

    CDC and Other Guidances for H1N1 Influenza - by Date and by Topic 

    Vaccine Information

    Schools, Child Care Programs, Higher Education
  • Resources for Child Care Programs, Schools, Colleges, and Universities - CDC, September 4 
  • CDC Guidance on Helping Child Care and Early Childhood Programs Respond to Influenza during the 2009–2010 Influenza Season - CDC, September 4
  • Technical Report for State and Local Public Health Officials and Child Care and Early Childhood Providers on CDC Guidance on Helping Child Care and Early Childhood Programs Respond to Influenza during the 2009-2010 Influenza Season - CDC, September 4
  • Preparing for the Flu: A Communication Toolkit for Child Care and Early Childhood Programs (CDC) - September 4
  • Guidance for Responses to Influenza for Institutions of Higher Education during the 2009-2010 Academic Year - CDC, August 20
  • Technical Report on CDC Guidance for Responses to Influenza for Institutions of Higher Education during the 2009-2010 Academic Year - CDC, August 20
  • Preparing for the Flu: A Communication Toolkit for Institutions of Higher Education - CDC, August 20
  • CDC Guidance for State and Local Public Health Officials and School Administrators for School (K-12) Responses to Influenza during the 2009-2010 School Year - CDC, August 7
  • Technical Report for State and Local Public Health Officials and School Administrators on CDC Guidance for School (K-12) Responses to Influenza during the 2009-2010 School Year - CDC, August 7  
  • Preparing for the Flu: A Communication Toolkit for Schools (Grades K-12) - CDC, August 7 
  • Surveillance 

    Effective May 1, 2010, reporting of aggregate data on hospitalized cases of 2009 H1N1 flu is no longer required.

    CDPH case report forms should continue to be submitted for indifiduals with probable or confirmed 2009 H1N1 flu who require hospitalization in an intensive care unit (ICU cases) or who die (fatal cases). Individuals who are positive for influenza A by PCR and negative for seasonal human subtypes H1 and H3 (i.e., unsubtypeable) are considered probably 2009 H1N1 flu cases. Individuals who test positive by a 2009 H1N1 influenza-specific PCR are considered confirmed 2009 H1N1 flu cases.

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    Additional Information


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    Last modified on: 8/26/2011 12:49 PM