According to a report by the Washington Post, the Center for Disease Control and Prevention (CDC) recommended that doctors begin testing patients from 13 to 64 years old for HIV, even if they are not in the high-risk group. The CDC believes that over 25% of people infected with HIV in the United States do not even know it. Many physicians believe that this additional testing could result in better treatment and earlier diagnosis of HIV and AIDS. In addition, the CDC believes that this would prevent people who do not know they have the disease from spreading it.