Just think the pandemic flu of 1918 was a strain of H1N1 that is still around and kills people today.
CoVID-19 by all statistics is here to stay.
In the evolution of all pandemics, it will circle the globe over a few seasons killing 16 - 30 million ( over burdening healthcare systems in multiple areas ) until the typical person in society encounters it and then dies or survives and builds up anti bodies that help for the next encounter.