For information about vaccines, visit the World Health Organization Web site, tion/en/. The goal of the World Health Organization (“WHO”), the United Nations specialized agency for health established in 1948, is the attainment by all peoples of the highest possible level of health. Health is defined in WHO’s constitution as a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.

The site offers access to position papers on Influenza and Pertussis, as well as a report on Immunization Safety, Immunization News, and a Safety Priority Project. The focus of Immunization Surveillance, Assessment and Monitoring is to monitor and assess the impact of strategies and activities for reducing morbidity and mortality of vaccine-preventable diseases.