World AIDS Day is celebrated every year on December 1. This is because the first case of AIDS was diagnosed on December 1, 1981. In order to raise awareness of AIDS, the World Health Organization (WHO) designated December 1 of each year as World AIDS Day in January 1988, calling on countries and international organizations around the world to organize related activities on this day to promote and popularize the knowledge of AIDS prevention. The symbol of AIDS Day is the red ribbon. The meaning of the red thick ribbon symbol is that the red thick ribbon is like a bond that ties the people of the world together to fight AIDS, it symbolizes our care and support for AIDS patients and infected people, our love for life and our desire for peace.