If you get R<1, eventually the disease will die out (see SARS-1). Coronavirus get deletions, etc. A vaccine will likely be developed (we got lucky, at first gla

If you get R<1, eventually the disease will die out (see SARS-1). Coronavirus get deletions, etc. A vaccine will likely be developed (we got lucky, at first glance, that SARS antigens are fairly stable). All these things take time. You don't "track" people with contact tracing, you ask positive cases who they came in contact with and ask those people to get tested. We could probably "eliminate" influenza with ubiquitous testing (at least for 99.99% of the human race). There just isn't an obvious entity to fund such an effort. There should be, but there isn't. Contact tracing is done for HIV.