There seems to have been no attempt to educate the public on what you should expect from different types of vaccine. When most people think of vaccines, they have in mind the one-shot-and-immune-for-life that you sometimes get with live-attenuated vaccines. Early articles on SARS-CoV-2 being developed clearly explained what to expect. I submitted an article (https://news.ycombinator.com/item?id=30162097) but there may be better ones.