SARS-Cov-2 is here to stay. The Delta variant, which has been the major strain in circulation for many months now, is very infectious and is likely to continue to spread. We will all probably be infected at least once during our lifetime.
While vaccines are effective against the coronavirus for the short term, their safety and effectiveness over the long term are still unknown, and data collection is ongoing. It is postulated that vaccines would remain effective at reducing the long-term risk of severe disease and death.