Identifying the antibodies involved with COVID-19 was a major step towards developing a vaccine. However, if you get antibodies from somebody who had COVID-19,

Identifying the antibodies involved with COVID-19 was a major step towards developing a vaccine. However, if you get antibodies from somebody who had COVID-19, then it does not confer you immunity. Those antibodies do not give your body a memory effect that allows your body, on its own, to respond to the infection as a preventative measure for COVID-19. What it does though, for people who are actively infected with COVID-19, is reduce the severity of the infection. The influx of antibodies are believed to "neutralize" the COVID-19 virus already present in the body, by binding to the virus itself.