Can we can immunity from Covid-19?

It appears that first controlled test was done on monkeys in the lab. What they have found is that once they were recovered after being sick for about 3 days, they have shown lab evidence of building the Antibody against the Covid-19. Subsequently they could not be reinfected. This is great news! Probably more human data will come.

https://www.biorxiv.org/content/10.1101/2020.03.13.990226v1