A new dengue vaccine tested in Brazil has proven to be effective in alleviating the disease, the state news agency Agencia Brasil announced Monday.
The Ebola conundrum continues as country after country speeds towards the "Holy Grail" for an effective vaccine. The 800 vials of Canadian experimental vaccine are expected to reach the World Health Organization headquarters in Switzerland on Wednesday.
U.S. researchers said Thursday that an experimental global vaccine may afford "partial protection " in monkeys against challenges with an especially deadly form of the AIDS virus, raising new hope for an effective vaccine in people.
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