Small sample size study (77 patients tracked over 11 months after having COVID-19), but, promising results for yet another reason not to takes the vaccines (natural immunity), and, for why the FDA's claim that anti-body tests shouldn't be used to prove "immunity" is absolute nonsense. For more on that, see here, here, and/or, here.
Two stories on the study:
https://www.oann.com/study-mild-covid-infection-provides-lasting-immunity/
The University's article on it:
https://medicine.wustl.edu/news/good-news-mild-covid-19-induces-lasting-antibody-protection/
The published study can be found here:
https://www.nature.com/articles/s41586-021-03647-4
And is backed up here:
What I am really curious to see is whether the natural anti-bodies are those targeting the spike proteins or some other area of the virus.