And is allowing current strains to spread further because there isn't enough vaccine not a gamble? I'm also not sure there is a big problem: "Neither bacteria

And is allowing current strains to spread further because there isn't enough vaccine not a gamble? I'm also not sure there is a big problem: "Neither bacteria nor viruses evolve resistance to vaccines as easily as they do to drugs, they wrote. Smallpox vaccine never lost its effectiveness, nor did the vaccines for measles or polio, despite years of use." -- https://www.nytimes.com/2020/11/27/science/covid-vaccine-virus-resistance.html https://www.nytimes.com/2020/11/27/science/covid-vaccine-vir... "Why the evolution of vaccine resistance is less of a concern than the evolution of drug resistance" - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6304978/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6304978/