Public Health Agency of Canada
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Guidance - H1N1 Flu Virus
WHO Declares H1N1 Post-Pandemic Period
On August 10, the World Health Organization declared that the H1N1 pandemic had entered the post-pandemic period. 
This decision was informed by epidemiological evidence from around the world showing the H1N1 influenza virus circulating at lower levels and taking on the behaviour of a seasonal influenza virus.
The Public Health Agency of Canada welcomes the decision by the WHO to declare the H1N1 flu pandemic over. Canada’s influenza monitoring system confirms that since the spring, the H1N1 influenza virus has been circulating in Canada in low to undetectable levels.
The Agency will continue to work with provinces, territories and international partners to monitor for the H1N1 influenza virus and will remain vigilant in preparing Canada for any future influenza outbreak.
Please note reference to "Interim" has recently been removed from all guidance documents on this site.
Clinical Guidelines
H1N1 Flu Virus Vaccine
- Guidance Document on the Use of Pandemic Influenza A (H1N1) 2009 Inactivated Monovalent Vaccine
- Recommendations for pH1N1 Vaccine in Pregnancy
- Guidance on H1N1 Vaccine Sequencing
Infection Prevention and Control
- Guidance: Infection Prevention and Control Measures for Occupational Health Management for all Health Care Settings
- Guidance: Infection Prevention and Control Measures for Health Care Workers in Long-term Care Facilities
- Guidance: Infection prevention and control measures for Health Care Workers Providing Care or Service in the Home
- Guidance: Infection prevention and control measures for Health Care Workers in Acute Care Facilities
- Guidance: Infection Prevention and Control Measures for Prehospital Care
- Additional Infection Prevention and Control Guidance for Pregnant Women, Newborns, and the Postpartum Period
Treatment and Clinical Care
- Managing Seasonal and Pandemic Influenza in Infants, Children and Youth
- Guidance on the Management of Pandemic H1N1 in Immunocompromised Indivuduals
- PANDEMIC H1N1: Fast facts for front-line clinicians
- Clinical recommendations for patients presenting with respiratory symptoms during the 2009–2010 influenza season
- Clinical Guidance for the Management of Influenza-Like Illness
in the Context of Pandemic H1N1 Influenza Virus in Adult Intensive Care Units
- Clinical Management Considerations: Timing and mode of delivery of pregnant women requiring hospitalization for H1N1 Influenza-Like-Illness (ILI)
- Use of antivirals to treat H1N1 flu virus (human swine flu)
- Clinical Guidance for Pregnant and Breastfeeding Women with Influenza-Like Illness in the context of the Pandemic H1N1 2009 Virus
- Important notice: Expiry of the Interim Order that permitted the sale of oseltamivir (Tamiflu®) for use in children under one year of age in the context of Pandemic H1N1 2009
- Information Update: Potential Medication Errors with Liquid Tamiflu
- Guidance for Ambulatory Care of Influenza-Like Illness in the context of H1N1 influenza virus
- Guidance for the Management of pandemic H1N1 2009 outbreaks in closed facilities
Remote and Isolated Communities
- Guidance for Remote and Isolated (RI) Communities in the context of the pandemic (H1N1) 2009 outbreak
- Looking After Someone at Home with H1N1 Flu Virus in a Remote or Isolated Community
- Guidance for Clinical Management of Patients with Influenza-Like-Illness (ILI) in the context of pandemic (H1N1) 2009 in Remote and Isolated Communities
- Guidance for the Preparedness and Management of Influenza-Like Illness (ILI), Including Pandemic (H1N1) 2009, in Residential Facilities in Remote and Isolated Communities
- Mass Immunization Clinics in Remote and Isolated Communities
- Hand Hygiene Recommendations for Remote and Isolated Community Settings
- Considerations for Definitions of “Remote” and “Isolated” in the Context of Pandemic (H1N1) 2009
- Guidance for Health Services Planning in Remote and Isolated Communities in the Context of Pandemic (H1N1) 2009
Continuing Medical Education
- Infectious Disease Outbreaks: Tools and strategies for front-line clinicians
- A Practical Guide to the H1N1 Vaccine
Laboratories
- Interim Guidance for Laboratory Testing for Detection and Characterization of Pandemic H1N1 (2009)
- Novel H1N1 Flu Virus (Human Swine Flu): Guidelines - Biosafety Advisory
Public and Event Organizers
- How to look after someone at home with H1N1 Flu Virus
- Individual and Community Based Measures to Help Prevent Transmission of Influenza-Like-Illness (ILI) in the Community, Including the Pandemic Influenza (HINI) 2009 Virus
- Public Health Guidance for the Prevention and Management of Influenza and Influenza-Like-Illness (ILI) including the pandemic (H1N1) 2009 Influenza Virus related to Mass Gatherings
Schools, Daycares, Post-Secondary Institutions and Camps
- Public Health Guidance for Post Secondary and Boarding Schools regarding the Prevention and Management of Influenza-like-illness (ILI), Including the Pandemic (H1N1) 2009 influenza Virus
- Public Health Guidance for Child Care Programs and Schools (K to grade 12) regarding the Prevention and Management of Influenza-Like-illness (ILI), Including the Pandemic (H1N1) 2009 influenza Virus
- Prevention and Management of Cases of Influenza-Like-Illness (ILI), including the Pandemic (H1N1) 2009 Influenza Virus, in Summer and other Children’s Camp Settings
Surveillance
- Surveillance Protocol for Severe Respiratory Illness - Surveillance for Influenza in Hospitalized Adults 2009- 2010
- Adverse Events Following Immunization Reporting Form
- Health Canada: Reporting Adverse Reactions to Antiviral Drugs During an Influenza Pandemic - Guidelines for Health Professionals and Consumers
- Case Definitions for National Surveillance H1N1 flu virus (Human Swine Flu)
- H1N1 Flu Virus (Human Swine Flu) Case Report Form for Initial 100 Canadian Cases
Managing H1N1 flu virus in various settings
- Public Health Guidance for the Prevention and Management of Influenza like Illness (ILI), Including the Pandemic (H1N1) 2009 Influenza Virus Related to Communal Living Settings
- Recommended Disinfection Procedures for Conveyance (aircraft, passenger trains, ferries, buses and cruise ships) and Terminal (airport, cruise ship, bus, ferry and train) Operators and their Staff
- Recommended Safe Work Practices for Flight Catering Operators and their Staff
- Prevention and Management of Influenza-Like-Illness (ILI), including the Pandemic (H1N1) 2009 Influenza Virus, on Conveyances including Airplanes, Trains, Ferries and Buses
- Prevention and Management of Influenza-Like- Illness (ILI), Including the Pandemic (H1N1) 2009 Influenza Virus, on Cruise Ships
- Guidance for the Management of pandemic H1N1 2009 outbreaks in closed facilities
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