1. Influenza and International Travel Robin Allen-Contreras, R.N., M.S.N., P.H.N., C.N.S. AITC Immunization & Travel Clinic San Francisco Dept. Public Health October 17, 2012

4. Asymptomatic Infections Approximately 30% of influenza virus infections remained clinically undetected. These asymptomatic cases unknowingly contribute to the spread of influenza. Source: Clinical Infectious Diseases 2005; 40:1282-7

6. http://www.who.int/influenza/gisrs_laboratory /flunet/charts/en/index.html Influenza Epidemiology by Season & Strain Northern Hemisphere Southern Hemisphere

9. Estimated Incidence per Month Among Travelers in Developing Countries, 2010

10. Travelers Play a Role in the Translocation of Influenza The rapid spread of 2009 pandemic influenza A (H1N1) was aided by infected travelers Although the virus was first identified in southern California in April 2009, human illnesses appeared weeks earlier in Mexico. Infected travelers who had visited Mexico were quickly detected in other parts of the world. Aided by travel, this new virus found its way to dozens of countries in less than 2 months after it was identified, resulting in a June 2009 pandemic designation by the World Health Organization.

11. 16.3 million visitors to Bay Area!

13. from WHY WE TRAVEL by Pico Iyer Salon.com 03/18/2000 We travel, initially, to lose ourselves; and we travel, next, to find ourselves. We travel to open our hearts and eyes and learn more about the world than our newspapers will accommodate. We travel to bring what little we can, in our ignorance and knowledge, to those parts of the globe whose riches are differently dispersed. And we travel, in essence, to become young fools again — to slow time down and get taken in, and fall in love once more.

14. The Gambia West Africa 2009