Assessment of the 2009 Influenza A (H1N1) Pandemic on Selected Countries in the Southern Hemisphere: Argentina, Australia, Chile, New Zealand and Uruguay [open pdf - 744KB]
"On August 9, 2009, the White House charged the Department of Health and Human Services (HHS) in coordination with the Office of the Director for National Intelligence (ODNI) and the Department of State (DoS) to study characteristics and impact of the 2009 Influenza A (H1N1) (refer to as 2009 H1N1) outbreak in the Southern Hemisphere. This assessment explores the characteristics and impact of the disease in select southern hemisphere countries that have been experiencing the 2009 H1N1 outbreak in May to August, coincidently with their normal influenza season. Countries assessed include Argentina, Australia, Chile, New Zealand, and Uruguay as they more closely resemble the U.S. with respect to demographics and economic development. The information in this report comes mainly from reports of the Ministries of Health of the selected countries, press releases, government publications, and U.S. embassies abroad covering the period from May 1 to August 24, 2009. From this assessment, it was possible to make the following general observations: All countries report that after mid July, disease activity in most parts of the country decreased. [...]. Virologic data indicates that the H1N1 virus strains currently circulating in the Southern Hemisphere are similar to those detected in the U.S. [...]. The most at-risk populations in the Southern Hemisphere are similar to those observed in the U.S. [...]. Commonly used community mitigation measures included school closures, cancellation of mass gatherings, isolation and quarantine, and other social distancing measures. [...]. Health care systems experienced stress, but it was generally geographically isolated and relatively short lived.