US researchers broke rules in Guatemala syphilis study
US researchers must have known they were violating ethical standards by infecting Guatemalan prison inmates and mental patients with syphilis.
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New chip could become a disease game-changer
A cheap, highly portable blood test has proven to be as accurate as expensive hospital-based analyses in detecting infectious diseases.
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US says sorry for Guatemalan syphilis tests
Experiments in 1940s saw hundreds of Guatemalan prisoners and soldiers deliberately infected to test effects of penicillin.
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Bush years' syphilis boom
Teenage pregnancies and syphilis have risen sharply among the generation of American schoolgirls who were urged to avoid sex before marriage
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Syphilis epidemic in China
China is suffering its biggest wave of syphilis in more than 50 years as a cocktail of changing sexual mores and weakening healthcare takes its toll.
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Cut the risk
Uncircumcised men have an eight-fold higher risk of becoming infected with HIV than circumcised men, according to a study.
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Rebound
Immune activation caused by infection with syphilis can stimulate latent reservoirs of HIV and cause viral load to rebound to low levels.
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High-risk sexual behaviour
A study of syphilis among homosexual men in New York City has found high rates of HIV infection, unprotected sex and recreational drug use.
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Madiba's magic is slowly dissipating
If a country lives by its myths, then the myth of post-apartheid South Africa must be that it had become "the rainbow nation".
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