People are recovering because their immune system learns and remembers how to fight it. I'd at least assume our immune system would behave as its programmed to with this virus, before jumping to opposite conclusion
Also, if immunity isn't possible we'd see mass reports of people who recovered months ago getting it again, since this has been around mid November
Also, if immunity isn't possible we'd see mass reports of people who recovered months ago getting it again, since this has been around mid November