SAN DIEGO – An entire generation has grown up not knowing what a world without HIV and AIDS is like.

As the AIDS virus enters its fourth decade, communities around the globe today are recognizing those whose lives have been lost to the virus and raise awareness during the 20th annual World AIDS Day.

The Joint United Nations Programme on HIV/AIDS (UNAIDS) has selected “Getting to Zero” as the theme of this year’s World AIDS Day, which will be used until 2015.