[mritun]

There is no evidence that getting infected with covid19 gives anyone immunity. There are already documented cases of People have been infected twice.

Herd immunity would be nice - but so far none of the known coronavirus infections grant immunity. Herd immunity cries will only kill innocent people.

Herd immunity is more a myth than a fact right now.

[zxcmx]

People not getting COVID-19 immunity after recovery seems an extraordinary claim that would require very strong evidence for me to take seriously.

How do you believe people recover from COVID-19?

The fact that you recover from it at all, and generate measurable antibodies in the process, and that humans generally gain some level of immunity to all the other coronaviruses we're plagued by weights my belief strongly towards at least short term immunity being very likely.