There's another study in Nature that shows that there are barely-detectable antibodies which have a very potent neutralizing activity (https://www.nature.com/ar

There's another study in Nature that shows that there are barely-detectable antibodies which have a very potent neutralizing activity (https://www.nature.com/articles/s41586-020-2456-9 https://www.nature.com/articles/s41586-020-2456-9). Key passage from the abstract: > Thus, most convalescent plasmas obtained from individuals who recover from COVID-19 do not contain high levels of neutralizing activity. Nevertheless, rare but recurring RBD-specific antibodies with potent antiviral activity were found in all individuals tested, suggesting that a vaccine designed to elicit such antibodies could be broadly effective.