“There is currently no evidence that people who have recovered from COVID-19 and have antibodies are protected from a second infection.” Jt: if immunity from reinfection doesn’t occur, everyone is going to get this multiple times*. https://www.who.int/news-room/commentaries/detail/immunity-passports-in-the-context-of-covid-19

We are just going to have to live with it. It will likely become a top killer of humans.

*at least until a vaccine is developed of which there are no guarantees.

There is no way in the world that people stay in lockdown for years. It isn’t going to happen.