I am surprised at how quickly a vaccine roll out has occurred. I did a PhD in the field of medicinal chemistry (admittedly about 15 or so years ago now) and my understanding of the vaccine development pipeline (and I should mention that I am more familiar with the development and approval of non-biologics), was that is was much more protracted than a few months. I find myself asking questions like: could vaccines for all viruses be similarly developed with a concerted effort? Did the vaccine developers just get lucky? Is corona virus a relatively straight forward vaccine target? Even so, only eight or nine months through all relevant trials confirming safety and efficacy? Makes me shiver a wee bit.
Early on there was discussion of the sun and moon having to align to have a vaccine successfully developed, many noted and respected scientists were wary of a vaccine ever being developed. All seems to good to be true. I'm not planning on traveling for the moment, my NZ backwater suits me fine.
Nick