In 1991, the World Health Organization (WHO) joined hands with the International Diabetes Federation (IDF) to establish World Diabetes Day. The purpose of this day is to increase awareness of diabetes worldwide. In December 2006, the United Nations (UN) adopted resolution 61/225, establishing World Diabetes Day as an internationally observed event, and all the countries of the world have increased their efforts in the prevention, management, treatment and sustaining healthcare system. The blue circle was developed originally for the campaign associated with the UN Resolution on diabetes. The circle symbolizes life, health and unity. The blue border of the circle represents the color of the sky and the flag of the United Nations. World Diabetes Day is on the 14th of November in memory of the birthday of Dr. Frederick Banting, and has been held every year since 2007.