Humans are at the top of the food chain. We have no natural predators. Except microscopic ones, like the coronavirus COVID-19.
Viruses are the ultimate parasite. They are smaller than a human cell. Their simplicity allows them to easily mutate and change to continue their existence, as evidenced by the delta variant. But they rely on a host (humans) to live and replicate. Viruses cannot live independent of their hosts.
We have found a way to conquer this predator, it is called a vaccine. A vaccine builds up the host’s defense so the virus cannot effectively live and multiply within a vaccinated host. This results in the virus eventually dying off when it has no hosts left. That is what is referred to as herd immunity. If everyone works together and gets vaccinated, we can eliminate COVID-19. Trust the science.