This year has seen a record number of dengue cases all over the world. It might not be a fluke, as climate change expands the areas where the mosquito that transmits the tropical disease can thrive. New measures for treatment and protection are necessary, but there's something peculiar about the way dengue infects the body that has stumped scientists for decades. That is, until now. Dr. Leah Katzelnick, Dr. Camila Odio and Dr. Stephen Whitehead from the National Institute of Allergy and Infectious Diseases (NIAID) are digging into dengue and coming up with ways to defy it.