Meh. Not much. None of the companies really want to do it anymore. Vaccine development is just not compatible with capitalism. Remember that even mass vaccination campaigns are generally only 1-5 lifetime doses. Behind every newly-scheduled vaccines (something that happens every 5-10 years) there are 1000s of research avenues that went nowhere, or nowhere lucrative. They cost to develop, test, deploy etc. And the benefit is dispersed, in the future, and not obvious to individuals. A quintessential collective good; must be done at scale.

Look into the Ebola vaccine: it was 90% ready to go for a decade and almost ended up in the same situation as the Lyme vaccine: abandoned because no pharmaceutical business (or military) was willing to pay for the costs of the final approval processes. There is FINALLY a malaria vaccine.

If vaccines were developed as ambitiously as they could be imagine what we could have them for: acne, UTIs, ear infections, common cold, STIs, cold sores, h pylori, MRSA, c diff, parasites, a real TB vaccines, HepC, HIV etc. And that is just thinking about life here in chilly first world nations. Last few years have seen an uptick of finally approved vaccines for tropical diseases like chikungunya and dengue fever which is great.

none of that shit will be profitable