Dengue fever - a tropical disease once confined mainly to Africa and Asia - has become a growing problem in the Americas. So far, there is no drug to treat the mosquito-borne viral disease or any vaccine to prevent the infection. Public health experts say it has the potential to become a global health problem - more costly and difficult to control than malaria. "Dengue had been eliminated in this hemisphere for quite a while but unfortunately it got reintroduced and has been ...
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