simonineaston wrote:Reading between the lines, it seems likely that variant/s will emerge that are not contained by existing immunity and that vaccines will have to be adapted and made available to populations in order to deal with them. If this happens before the virus ceases to be active, due to lack of available hosts, ie before the 70%-ish figure I've heard talked about, for the current vaccine/s take-up, we'll be back to square one.
Doesn't have to be square one for a couple of reasons.
It could be at a time when the prevalence is low and we have a working test/trace/isolate system. The UK doesn't have recent experience of this but it can work very efficiently.
And because of the way that several of the vaccines are engineered we will probably be able to produce and authorise new versions that match the variants quickly and safely.
simonineaston wrote:This doesn't sound much fun to me and suggests we're going to be living with Sars-Cov2 for perhaps longer than we maybe thought we were...
That depends what you thought before... and IMHO the Government has been very misleading in some of its statements on future time course. Experts (!) who understand these things not so much.