> Can flu jabs be made more effective, and multi-strain, using mRNA vaccine technology? That's a genuinely new tool in the toolbox. In theory, yes; in practice

> Can flu jabs be made more effective, and multi-strain, using mRNA vaccine technology? That's a genuinely new tool in the toolbox. In theory, yes; in practice, I don't see this happening for some time (outside of a possible combined SARS-CoV-2 booster + flu combo). The mRNA vaccines are expensive to produce, and it's hard to justify a cost multiplier that's a magnitude higher & harder to produce. Flu vaccines are already multi-strain, and the current techniques already attempt to generate the recombinant strains that might be generated in the wild. Flu mutates faster than the current egg based vaccine production pipeline can handle, and the mRNA vaccine pipeline is orders of magnitude smaller in scale. This will change, of course.