Yellow fever: understanding the rare side effects of vaccines

Preventive vaccination is a powerful tool in controlling viral outbreaks. It is important that any side effects associated with the use of vaccines are as mild as possible. Scientists from the Institut Pasteur set out to understand the reasons behind the rare neurological side effects that occasionally occur with use of the yellow fever vaccine. They studied a vaccine strain known as FNV, which stopped being used in the 1980s because it caused a high number of neurological side effects. The conclusions drawn from the analysis of this former vaccine can yield valuable lessons for current vaccines.

Find out more