Dengue fever is a growing problem: why it’s so hard to beat with vaccines

Dengue fever is a growing problem: why it’s so hard to beat with vaccines

Dengue, a mosquito-borne disease, affects millions of people every year across Asia, Africa and Latin America. And it’s expanding geographically as warmer temperatures and urban growth allow mosquito populations to thrive in new regions. At first glance, dengue seems like an obvious candidate for vaccination. It is caused by a virus. Infection triggers an immune response. Vaccines against similar viruses already exist. But dengue is complicated.…