Reinventing the yellow fever vaccine
For 12 years, virologists Johan Neyts and Kai Dallmeier have been working on their innovative vaccine technology at the Rega Institute in Leuven, Flanders. As such, they developed an optimized version of a preventive shot against yellow fever.
“Yellow fever vaccines have been produced on fertilized chicken eggs for 80 years,” Neyts explains. “However, many batches are rejected because this process is difficult to standardize. It’s also cumbersome. I witnessed, for example, how a producer in Senegal had to fly in fertilized chicken eggs from Germany every 2 weeks.”