It probably depends on how long acquired immunity lasts, which we don't know yet. People remain immune to some diseases, like measles, for a lifetime after surviving the disease or being vaccinated. Immunity to other diseases, like influenza, disappears quickly (even immunity to the same strain lasts less than a year).[1]
If COVID-19 is in the latter category, it will be difficult to control and we'll probably have to learn to live with it, as we have learned to live with the flu causing hundreds of thousands of deaths each year worldwide.
If COVID-19 is in the latter category, it will be difficult to control and we'll probably have to learn to live with it, as we have learned to live with the flu causing hundreds of thousands of deaths each year worldwide.
1: https://www.sciencemag.org/news/2019/04/how-long-do-vaccines...