1King CC,et al. Integrated Seven Influenza Surveillance Systems in Taiwan ,Institute of Epidemiology, College of Public Health, National Taiwan University (NTU)[EB/OL].[2009-10-12]. a1234567@ ccms. ntu. edu. tw.
2Centers for Disease Control and Prevention. Overview of Influenza Surveillance in the United States [ EB/OL ].[2009-08- 08]. http ://www. cdc. gov/flu/weekly/fluactivity, htm.
3Public health Agency of Canada, FluWatch, Weekly Reports: May 24,2009 to May 30,2009 (Week 21 )[R/OL ].[2009-08- 09]. http ://www. publichealth. gc. ca.
4Hugo Lopez-Gatell. Influenza Surveillance in Mexico: Lessons and Challenges, Ministry of Health, 02 July 2009[R/OL ]. 2009-08-09 ]. http://www. insp. mx/encuentroh1n1/ ponencias/gatell.pdf.
5Jarbas Barbosa da Silva. Brazilian Preparedness Plan for an Influenza Pandemic, May 2006[R/OL]. [ 2009-08-12]. http :// www. saude, gov. br/svs.
8European Centre for Disease Prevention and Control (ECDC). European Influenza Surveillance Network ( EISN ) [ EB/OL ]. [2009-10-09 ]. http://www, ecdc. europa, eu/en/activifies/ surveillance/EISN/Pages/home, aspx.
9Popova str. Influenza Surveillance System in Russia, Influenza Research Institute, Russian Academy of Medical Sciences [EB/ OL]. [2009-10-09 ]. http://www, influenza, spb. ru.
10Australian Influenza Surveillance Summary Report, Depamnent of Health and Ageing, Reporting Period: 16 May 2009 -29 may 2009(#4 -09) [R/OL].[2009-08-12]. flu@health. gov. au.
