3 ms·
>Some early evidence suggests natural immunity may not last very long. Doesn't the evidence so far suggest the exact opposite?
by Camas 6y ago
>Some early evidence suggests natural immunity may not last very long.
Doesn't the evidence so far suggest the exact opposite?
- tim333 6y agoI think so. The antibodies drop off rapidly but that's normal with viruses. Sars 1 patients still have T cell response 17 years later.