Ars Technica – John Timmer
“We’re still struggling to understand whether infection with SARS-CoV-2, with or without COVID-19 symptoms, provides protection from further infections. Antibodies are an indicator of immunity and are the easiest aspect of the immune response to track. But data indicates that the generation of antibodies is highly variable, and their production may start fading within months. But there are many other aspects to the immune response, many of them centered on T cells. And here again, the response seems to be extremely complex.
Now, additional studies are coming out looking at other specialized aspects of the immune response. While these results provide some cause for optimism in terms of long-lasting immunity, there remain large numbers of unknowns.“
Full Article – Ars Technica