Heppenheimer
Well-Known Member
One caveat... antibody levels are not the only thing that determines immunity. T cell activity also provides a fair amount of immunity, but this isn't directly measurable by commercial lab tests.![]()
Immunity to Covid-19 could be lost in months, UK study suggests
Exclusive: King’s College London team found steep drops in antibody levels three months after infectionwww.theguardian.com
So, although measuring antibody levels is a good way to verify immunity, the lack of these antibodies doesn't necessarily mean a person has no immunity.
I'm hoping that T cells will incur some kind of prolonged immunity, but we don't know if this will be the case yet.