COVID can never be stopped globally. SARS-CoV-2 is now the fifth endemic human coronavirus and will never be eradicated regardless of how many people wear masks or get vaccinated or whatever. There is no such thing as "safe", we just have to accept the risk and move on. Fortunately the vaccines and other treatments are very effective at preventing deaths.

https://www.businessinsider.com/delta-variant-made-herd-immu...