The World Health Organization (WHO) in Geneva, Switzerland, put the brakes on implementation of the world’s first dengue vaccine today when it recommended it only be used in people who have previously been infected with the disease—a move that will shrink the potential market for the vaccine’s producer, Sanofi Pasteur

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Sanofi revealed in November that Dengvaxia – the world’s first dengue vaccine – might increase the risk of severe disease in people who had never been exposed to the virus. The news prompted an uproar in the Philippines, where more than 800,000 school-age children had been vaccinated

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A bacterium called Wolbachia could stop the bloodsucking insects from spreading diseases like Zika and dengue fever

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Researchers aren’t certain it is possible — or safe — to boost blood levels of ivermectin high enough to wipe out generations of mosquitoes during the biting season, which can last for months. Scientists at the medical school of the University of Barcelona have come up with a novel alternative: Use livestock

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