Yes it’s called an endemic. A virus that just doesn’t go away and always remains circulating in human population centers. Over time the virus mutates to become

Yes it’s called an endemic. A virus that just doesn’t go away and always remains circulating in human population centers. Over time the virus mutates to become less and less dangerous as that enables easier transmission. There is not anything anyone can do once a virus has reached that phase. It doesn’t matter if you lock all the borders, the flights, ships, so forth. There will always be areas in the world, Africa, India, the Middle East, South America, and so forth where the health infrastructure let alone enforcement of any ordinance is non existent. It’s areas like this already where most of the viruses originate. Not about being vaccinated or not, but the necessary basic health precautions that people may or may not follow. That’s washing hands regularly, covering their mouthes when they cough or sneeze, cooking food well, routine medical checkups, maintaining cleanliness and sufficient distance away from people and so forth. Unfortunately a good portion of the world live in substandard environments where ultimately we’re all affected should a highly transmissible, sufficiently low mortality rate virus like SARS2 originate.