Nanoparticle vaccinates mice against dengue fever

Nanoparticle vaccinates mice against dengue fever: Every year, more than 350 million people in over 120 countries contact dengue fever, which can cause symptoms ranging from achy muscles and a skin rash to life-threatening hemorrhagic fever. Researchers have struggled to create effective vaccines against dengue virus, in part because four distinct serotypes, or strains, cause the disease and a vaccine must immunize against all four individually. Now, a new type of nanoparticle effectively vaccinated mice against one of the serotypes and could be created to target all four.