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Roadmap for the development of candidate vaccines for influenza

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Naturally attenuated candidates

Next steps

Naturally attenuated candidates

Research Question

  • Develop safe live virus Influenza vaccines – without risk of reassortment.
  • Amenable for mass vaccination – control

Research Gaps and Challenges

  • Develop vaccines easy to administer that induce strong mucosal immunity able to block shedding, and prevent infection and transmission of LPAIV and HPAIV
  • Regulatory issues regarding attenuated vaccine usage due to safety for public health (possible reversion of virulence)
  • Risk of reversion to virulence and/or recombination
  • Application may depend on target species swine, equine versus avian species
  • Cost of vaccine for each species

Solution Routes

  • Solution for blocking reversion of virulence and reassortment

State Of the Art

  • No incentive for industry to invest in research on Al attenuated vaccines as current regulation do not allow its use