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[quote=Anonymous]If I'm understanding this correctly, this study of non-hospitalized mild cases indicates that despite low levels of antibodies, these patients had immune responses that indicate further immunity and promising news for a vaccine.

Carl T. Bergstrom
@CT_Bergstrom
In-depth molecular work on plasma from individuals who recovered from COVID-19 without hospitalization reveals that despite relatively low antibody titres, antibodies against the receptor binding domain of the spike protein can have powerful activity.

https://www.biorxiv.org/content/10.1101/2020.05.13.092619v1.full.pdf

"Antibodies are essential elements of most vaccines and will likely be crucial component of an effective vaccine against SARS-CoV-2 . The observation that plasma neutralizing activity is low in most convalescent individuals, but that recurrent anti-SARS-CoV-2 RBD antibodies with potent neutralizing activity can be found in individuals with unexceptional plasma neutralizing activity suggests that humans are intrinsically capable of generating anti-RBD antibodies that potently neutralize SARS-CoV-2. Thus, vaccines that specifically and efficiently induce antibodies targeting the SARS-CoV-2 RBD may be especially effective."

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