U.S. government medical researchers intentionally infected hundreds of people in Guatemala, including institutionalized mental patients, with gonorrhea and syphilis without their knowledge or permission more than 60 years ago.
Many of those infected were encouraged to pass the infection onto others as part of the study.
About one third of those who were infected never got adequate treatment.
On Friday, Secretary of State Hillary Clinton and Health and Human Services Secretary Kathleen Sebelius are expected to offer extensive apologies for actions taken by the U.S. Public Health Service.
Full story: U.S. to apologize for STD experiments in Guatemala – Health – Sexual health – msnbc.com