There are reports that some of the people who tested the vaccine, may have actually been infected.
David Martin, a New York actor and model was diagnosed with HIV in 1987. He was told he had 18 months to live.
"I felt all my hopes and dreams had ended there was nothing more to live for," he said.
But 18 months became 25 years. He's living life to the fullest but says daily challenges remain.
Like ongoing medical treatments, and navigating relationships and dating, and telling someone you're HIV Positive.
And as people live longer with HIV and AIDS, there's an even bigger need for medical and social services and all of that needs funding.
Much of that funding comes from the New York AIDS walk, now celebrating its 27th year. It's the world's largest AIDS fundraising event.
The money raised goes to organizations like GHMC. The Gay Men's Health Crisis has been helping New Yorkers with HIV and AIDS for the last three decades.
"It is not a death sentence with treatment and support they can live full and productive and healthy lives," said Majorie Hill, CEO GHMC.
David first came to the GHMC for legal services, and then became a part of the community. He now volunteers as a mentor, inspiring others who have just been diagnosed.
The AIDS Walk New York is this Sunday morning starting in Central Park.
For more information, go to http://aidswalk.net/newyork
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