The critical thing that these people always miss is transmissibility is totally irrelevant. No-one cares about transmissibility from a healthcare perspective. The virus version of the common cold is quite transmissible but no-one really cares about that because it is a mild infection.
What is missing in the data for these recent variants is the evidence of changes that will lead to an increase in moderate to severe COVID (and mortality). For all we know they may decrease mortality which would actually be a very welcome variant!
It's just highly unlikely that a vaccine evading strain will emerge whilst a vaccinated population doesn't exist. Vaccine evading strains can only become selected because of the impact of vaccines. Until then the virus remains novel and will tear through unvaccinated populations as it did before until it encounters immune systems that are already prepared for it. It is here that selective mutations occur that may cause problems for the vaccine.
The Moderna vaccine has recently gone through trials assessing efficacy against the UK strain and it was found to be 85% effective. I really wouldn't worry, almost everything you read on strains even from doctors and epidemiologist is for now speculative and lacking in evidence.
The evidence so far from the larger vaccinated populations in Israel and clinical trials is the vaccines we have available are extremely effective and almost unbelievably effective actually.
Out of an abundance of caution, Moderna launches clinical program to boost immunity to emerging variants Manuscript posted to preprint server; company to host conference call once manuscript is available CAMBRIDGE, Mass. --(BUSINESS WIRE)--Jan. 25, 2021-- Moderna Inc .
investors.modernatx.com