Perhaps immunity wasn't the right word. Protection may have been a better term. People's second cases aren't as bad as their first, in general, because their bo

Perhaps immunity wasn't the right word. Protection may have been a better term. People's second cases aren't as bad as their first, in general, because their body's immune system is better able to respond after a first infection. Covid-19 will not going away. It can be expected to be transmitted like other endemic coronaviruses, and not be a big deal for most people. Children in the future will catch it, like they do other common cold coronaviruses, and they will grow into protected adults.