Will a one-shot dengue vaccine be a game changer in Brazil?

Every year, there are as many 400 million cases of dengue fever globally, according to the World Health Organization. The Americas see the majority of these cases, and Brazil has among the highest rates. Two vaccines have recently been rolled out in the country to help combat the disease, and it's just one of the ways the nation has learned to fight it. The World's Host Carolyn Beeler spoke to Dr. Felipe Naveca at Fiocruz, a health research institute affiliated with Brazil's Ministry of Health, to find out if these could be game changers in the fight against dengue.