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Avian influenza

WHO is coordinating the global response to human cases of H5N1 avian influenza and monitoring the corresponding threat of an influenza pandemic. Information on this page tracks the evolving situation and provides access to both technical guidelines and information useful for the general public.

Latest information

4 May 2010
Avian influenza – situation in Cambodia

21 April 2010
Avian influenza – situation in Viet Nam - update 11

6 May 2010
Cumulative Number of Confirmed Human Cases of Avian Influenza A/(H5N1) Reported to WHO

16 March 2010
H5N1 avian influenza: timeline of major events

Tracking A(H5N1) influenza viruses
Influenza tracking system launched
Influenza Virus Tracking System
Viruses shared with WHO from 2003 to 2007


- General quidelines
- Diagnosis and treatment
- Food safety
- Infection control
- Surveillance
- Vaccines and antivirals

Full list


- Situation update archives
- Number of human cases archives


- WHO activities in avian influenza and pandemic influenza preparedness
- Pandemic preparedness plan
- Current WHO phase of pandemic alert
- WHO Global Influenza Programme


- Food and Agriculture Organization
- World Organisation for Animal Health


Global and country maps


23 October 2007
Projected supply of pandemic influenza vaccine sharply increases

Media contacts, news releases, multimedia


13 June 2007
Pandemics: working together for an effective and equitable response

More speeches


25 April 2007, Geneva, Switzerland
Increasing the access of developing countries to H5N1 and other potentially pandemic vaccines
Full text

Latest meetings


Antigenic and genetic characteristics of influenza A(H5N1) and influenza A(H9N2) viruses and candidate vaccine viruses developed for potential use in human vaccines
February 2010
Full text

Availability of a new recombinant H5N1 vaccine virus
May 2009
Full text

Human cases of avian influenza A(H5N1) in North-West Frontier Province, Pakistan, October–November 2007
Full text

Options for the use of human H5N1 influenza vaccines and the WHO H5N1 vaccine stockpile
May 2008
Full text

Tracking A(H5N1) avian influenza viruses
Influenza tracking system launched
Influenza Virus Tracking System
Viruses shared with WHO from 2003-2007

Process of influenza vaccine virus selection and development
Full text

Working paper: Patent issues related to influenza viruses and their genes
Full text

H5N1 avian influenza: Timeline of major events
Full text

WHO Interim Protocol: Rapid operations to contain the initial emergence of pandemic influenza

Frequently asked questions

Fact sheet

Advice for travellers

Ten concerns if avian influenza becomes a pandemic

WHO African Region

WHO Region of the Americas

WHO South-East Asia Region

WHO European Region

WHO Eastern Mediterranean Region

WHO Western Pacific Region

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