An aggressive form of HIV uncovered in Cuba
A stronger and more aggressive strain of the HI- virus has been discovered in HIV positive patients in Cuba.
Pills before and after sex can help prevent HIV
Taking a drug before and after sex can help to prevent HIV infection in gay men.
Undiagnosed or untreated people cause most HIV infections
Most HIV infections stem from undiagnosed or untreated patients, suggesting that there's a long way to go in containing the spread of the disease.
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