Given how serious the situation is worldwide I suspect that there will be at least an attempt to speed things out as much as possible. I would be surprised if it actually would end up being a year and a half.
[1] https://jamanetwork.com/journals/jama/article-abstract/26649... [2] https://www.fda.gov/patients/drug-development-process/step-3...
That vaccine made dengue significantly worse for those who had not been previously exposed to it. Situations like this are especially bad because they erode trust in vaccines, perpetuating the idea that all vaccines are bad/malicious when in fact a properly vetted vaccine is very safe.
[1] - https://www.npr.org/sections/goatsandsoda/2019/05/03/7190377...