There is one question constantly running in my mind: how were COVID-19 vaccines discovered in a very short time span, but Herpes did not find its way even after years of painstaking research?
Two things that come to mind:
- Unlike COVID-19, the herpes virus does not completely shut down society. So there's much more incentive and hence funding to finding a vaccine for COVID-19.
- We already have researched (but not completed) vaccines for other corona-type diseases like SARS and MERS, and luckily this knowledge helped in accelerating the process of finding a vaccine for COVID-19. See e.g. the recently published article 'Coronavirus vaccine development: from SARS and MERS to COVID-19'.