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Trial of Dengue Fever Vaccine Cuts Infection in Half

The French drug manufacturer Sanofi Pasteur says its vaccine against dengue fever protected more than half of all children in a late-stage clinical trial. Dengue fever is a mosquito-borne illness that infects an estimated 400 million people each year. The vaccine was tested in Indonesia, Malaysia, the Philippines, Thailand and Vietnam on more than 10,000 children, protecting 56 percent of them. Another large trial is underway in Latin America. Those results are expected later this...

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