Good, but the real question is whether the immune system will "remember" the vaccine for long enough. From [1]:
> Although the magnitude of neutralizing antibody (nAb) responses correlated with disease severity, there was a rapid decline in nAb titres in most patients within 3 months after onset of symptoms. [...] However, the consequences on secondary immune responses and their ability to prevent reinfection remain to be determined.
> Although the magnitude of neutralizing antibody (nAb) responses correlated with disease severity, there was a rapid decline in nAb titres in most patients within 3 months after onset of symptoms. [...] However, the consequences on secondary immune responses and their ability to prevent reinfection remain to be determined.
[1]: https://www.nature.com/articles/s41577-020-0405-3