Dengvaxia, a dengue fever vaccine, was licensed by the US Food and Drug Administration in May 2019 for use in dengue-endemic areas. It is the first vaccine approved to prevent dengue infection or disease. Injection of the vaccine into your arm should be done in a doctor's office by someone who knows how to inject vaccines into children. The vaccine is given as two shots at least one month apart. Children who have not been vaccinated against dengue should not receive the vaccine. Anyone who has had severe allergies to proteins found in vaccines should not receive the vaccine. Children who have not received three doses of the vaccine may not be fully protected against all four strains of dengue virus that are prevalent in their area. Children who have received three doses of the vaccine may still get sick with dengue after they go out in public places where there are lots of people who aren't vaccinated. In this case, they would need a tetanus shot too. The vaccine is made from the strain of virus that caused the recent epidemic in Brazil. It is hoped that this vaccine will reduce the number of cases of dengue fever in people who were not previously infected with the virus.