Crazyface
Tour Winner
There are a variety of other delivery mechanisms in development. Nasal vaccines are available for flu, the ones kids get, for example, and certainly plausible here. Delivery to the nasopharynx is clearly suitable for a virus that enters the same route. Oral is also possible, but I would think it is more problematic in development terms so less likely to be a success in my opinion. It does have the massive advantage of needing a lot less NHS staff input. Could be mailed out to patients. There are also patches in development which are self administered and slowly absorbed.
However this all pans out, the field of vaccine development has taken a quantum step forward.
I'd just like to say thanks for all your inputs to the various posts. Very very helpful in helping understand what is going on.