Researchers Offer Strange Answer to Anticipated Dengue Spikes Following Vaccine

Heather Callaghan

Researchers indeed continue to develop vaccines for tropical, mosquito-vectored diseases like dengue fever, which affects 50 million people per year. 

There are no commercially available vaccines for the virus - yet. But, they've run into a big problem.

Researchers watching vaccine development caution that there will be initial disease spikes with its use. There's no argument about this observation. In fact, it's admitted. 

But the explanation to ward off panic and ensure that people in other countries will take that future risk, is beyond a mental back flip.