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A single-dose vaccine for dengue fever developed in Brazil was nearly 80% effective in a major trial.

Sao pauloRio de janeiroEstado do rioEduardo paesAssociated pressYale school of the environmentButantan instituteWorld health organizationCenters for diseaseA world health organizationNational council of health secretariesPaolo based butantan instituteYale schoolNational councilHealth secretariesDisease control