With an eye to Sunday's premiere of HBO's The Normal Heart, singer and AIDS activist Elton John reminds us that the AIDS crisis is not over.

Director Ryan Murphy's adaptation of Larry Kramer's Tony-winning play takes a look at the early days of the AIDS pandemic in New York City.

(Related: Matt Bomer left his family to prepare for Normal Heart role.)

The Normal Heart is “as relevant today as an HBO movie as when it premiered on the stage in New York City in 1985,” John wrote in a CNN op-ed.

“While The Normal Heart is a product of a specific time, it is not an artifact. There is still an AIDS crisis – not only in sub-Saharan Africa, but right here in America, in your state, in your community. And, just as in 1985, it is silence, fear and stigma that continues to drive the epidemic.”

“Today, we know how to protect everyone, and we have the ability to treat every single person living with HIV,” continued John, founder of the Elton John AIDS Foundation. “Yet AIDS continues to prey upon the most vulnerable in our society: the poor, the incarcerated, sex workers, drug users, and those living in regions where intolerance and stigma are facts of life. Today, as ever, silence equals death.”