Crispr editing vaccines are still around. Crispr Therapeutics has a few in stage 2 trials, and there are a few others with them -- Intellia and Editas as examples. The problem is, that style of vaccine can be super dangerous, and they're much less effective in older people. The vaccines currently in trial are for pretty awful hereditary diseases, like sickle cell or amyloid polyneuropathy.

Using CRISPR for a virus was a stupid idea, and I'm fairly certain it didn't go far at all.