A brand new flu vaccine has to be created once a year for both the northern and southern hemispheres. The constant and rapid evolution of the virus means a vaccine which is effective this year could be useless by the next. The group of Xavier Saelens (VIB Department for Molecular Biomedical Research, UGent) is working out a way to beat the virus by producing a vaccine that works long-term, against many types of flu, including pandemic strains. BBC World News interviewed Xavier, in his quest to develop this universal vaccine.
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