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Health and medicine/Pharmacology/Placebos

Combined Therapy Reduces Infections in the Elderly
Human Infection Study Speeds Dengue Vaccine Development
This type of small-scale study could also be used to test candidate vaccines for other viruses, including the Zika virus, scientists say.
Science: Naturally Occurring Molecule Helps to Prevent Panic
Vaginal Gel Can Reduce HIV Risk in Women, Researchers Report in Science

A vaginal gel containing the HIV drug tenofovir has shown promise as a safe and effective method for reducing HIV infection in women, according to a study conducted in South Africa. The study was published Monday 19 July at the Science Express website.

HIV prevention options for women are urgently needed, especially in sub-Saharan Africa where young women bear the greatest burden of the HIV epidemic.