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A blueprint for an AIDS-free generation has just been unveiled. But how close are we really? From Hong Kong to Nairobi, from Brussels to Brazil — GlobalPost sheds light on the state of AIDS and HIV worldwide in this in-depth series.

Two decades of HIV/AIDS Public Service Announcements

Over the last few decades, the state of HIV/AIDS has experienced significant change, and so have the prevention messages.

BOSTON — The history of HIV/AIDS may be a short one, but in the brief time since its inital discovery in the early 1980s, AIDS has been a leading cause of death worldwide. 

For this disease which, in the early years, had no known cause and was considered to be untreatable and often fatal, the messages surrounding it were often equally dark. However, in the years that have passed since its inception, investments in AIDS research and treatment options have made the prognosis, and the public realtions message, much brighter.

Below, is a historical timeline of HIV/AIDS public service announcements  — the range of which demostrates the ever-changing message surrounding the disease.

More from GlobalPost: The State of AIDS

http://www.globalpost.com/hiv-aids-timeline-public-service-announcements-global-health