World Health Organization Assistant Director-General for Health Security and Environment Keiji Fukuda attends a plenary session of the WHO Summit "Influenza Lessons Learned and Preparedness", in Cancun, Mexico, on July 3, 2009. Getty Images logo Getty Images 31 months ago

World Health Organization Assistant Director-General for Health Security and Environment Keiji Fukuda attends a plenary session of the WHO Summit "Influenza Lessons Learned and Preparedness", in Cancun, Mexico, on July 3, 2009.