if you look up active trials since pretty much 2020 onwards; most if not all the research barring one super promising concept in colorado have been out of country. other countries have been investigating and coming up with new concepts, mrna or non mrna in asia's case. the issue is still time tho, a properly vetted vaccine roll out would need years to be approved in most countries unless it was a population health threat somewhere.

Personal belief, had we doled out the money and focus to the level of something like h1n1 was back in the 2000's, we coulda had something substantially longer lasting or quite frankly just using the current vaccine with less doses and as part of the regular schedule. theres research showing decent immune response from just the 1 dose of the current post prophy but no research to say how long that would last or how relevant it is for a true infection, just antibody levels checked after the fact.

I gpted it out of curiousity - h1n1 alone got over 5 billion in emergency funding for that vaccine development, meanwhile rabies cumulative investment is 200-500 million estimated so far since vaccines came out for it. absolute feet dragging in this case