SARS-CoV-2 is very similar to other endemic human coronaviruses like HCoV-OC43. Immunity isn't a binary yes or no condition and there are other components to the human immune system beyond just antibodies. The vast majority of recovered patients will likely retain a high level of immunity for many years. As with most viral diseases a small fraction of patients will suffer reinfections but even those typically experience less severe symptoms.
https://www.cdc.gov/coronavirus/2019-ncov/hcp/planning-scena...
SARS-CoV-2 is very similar to other endemic human coronaviruses like HCoV-OC43. Immunity isn't a binary yes or no condition and there are other components to the human immune system beyond just antibodies. The vast majority of recovered patients will likely retain a high level of immunity for many years. As with most viral diseases a small fraction of patients will suffer reinfections but even those typically experience less severe symptoms.
https://www.technologyreview.com/2021/01/06/1015822/covid-19...