WFLA - There's new hope in the fight against HIV and AIDS.

For the first time in the 30 year history of fighting the disease the Food and Drug Administration has approved a drug to reduce the risk of infection.

People with HIV have used Truvada for years.

It will now be used as a preventive measure for healthy people at high risk of getting HIV, like those who have sex with HIV-infected partners.

One study showed the drug reduced infection rates by 63% overall in healthy men and women at high risk of infection.

That means the risk of infection is still fairly high.

Advocates warn lessons about safer sex are still needed.

"I think people just don't consider that it's a threatening disease but it's still really is a very threatening and it can still kill you," says William Harper of the AIDS Service Association.

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