The quickest answer is, we don’t know.
Right now, scientists do not fully understand how the presence of antibodies relates to immunity. They do not know if someone can be re-infected with COVID-19 if they already had the disease, or for how long potential immunity might last.
As more research on coronavirus and COVID-19 is conducted and the immune response to the disease is better understood, scientists and doctors will better understand the relationship between antibodies and immunity.
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