https://news.yahoo.com/government-official-coronavirus-vacci...
Even if initial safety tests go well, “you’re talking about a year to a year and a half” before any vaccine could be ready for widespread use, according to Dr. Anthony Fauci, director of NIH’s National Institute of Allergy and Infectious Diseases.
So even if these trials go well that suggests a vaccine is a long way down the road.
[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...