[powerapple]

What you are saying might turn out to be true. There was a report on how Chinese vaccine was good in some countries but not doing well in Brazil, it may be related to mutation as well. If the virus mutates fast because countries are not controlling the spread well enough, current vaccine may be less and less effective in time. I am sure the producers are updating their vaccines in meantime. It will take time and the production will take time as well.

Unfortunately mRNA vaccines will not be a universal solution for all countries, it will only be applicable for a few rich countries.

[Ulrich2]

Good news: Curevac needs only a standard refrigerator for storage. Hopefully it works. Also, Biontech is working on a V2.0 with less cooling required.