Abstract
The first laboratory-confirmed cases of infection with pandemic influenza A(H1N1) 2009 in the Western Pacific Region were reported on 28 April 2009. By 11 June 2009, the day the pandemic was declared by the World Health Organization, nine Western Pacific Region countries and areas had reported laboratory confirmed pandemic influenza A(H1N1) 2009 cases. From April 2009 to July 2010, more than 250000 cases and 1800 deaths from laboratory-confirmed pandemic influenza A(H1N1) 2009 were reported from 34 countries and areas in the Region. By age group region-wide, 8.6%, 41.9%, 48.3%, and 1.2% of cases were in the <5years, 5-14 years, 15-64 years, and 65+ years age groups, respectively; the overall crude case fatality ratio in the Western Pacific Region was 0.5%. The pandemic demonstrated that region-wide disease reporting was possible. Countries and areas of the Western Pacific Region should take this opportunity to strengthen the systems established during the pandemic to develop routine disease reporting.
Highlights
Lisa McCalluma and Jeffrey Partridgea on behalf of Emerging Diseases Surveillance and Response, Division of Health
This paper summarizes the available epidemiological and virological data on the influenza A(H1N1) 2009 pandemic from the Western Pacific Region
influenza-like illness (ILI) and severe acute respiratory infection (SARI) case and death data were obtained from World Health Organization (WHO).[3]
Summary
Lisa McCalluma and Jeffrey Partridgea on behalf of Emerging Diseases Surveillance and Response, Division of Health. From April 2009 to July 2010, more than 250 000 cases and 1800 deaths from laboratoryconfirmed pandemic influenza A(H1N1) 2009 were reported from 34 countries and areas in the Region. The pandemic demonstrated that region-wide disease reporting was possible. Countries and areas of the Western Pacific. Region should take this opportunity to strengthen the systems established during the pandemic to develop routine disease reporting. In mid-April 2009, the United States of America’s Centers for Disease Control and Prevention identified a novel influenza A(H1N1) virus from two people in California. By the end of the third week in April, patients with influenza-like or pneumonia-like symptoms in Texas and Mexico were confirmed as cases of infection with the same novel influenza A(H1N1) virus.[1]
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