== A total of 186 samples from 137 symptomatic COVID-19 patients were assessed concerning SARS-CoV-2 neutralization titers and grouped according to the weeks after sign onset.aProportions of plasma neutralization activity were stratified in 2-week intervals.bCorrelation analysis of neutralization titer with S- and N-specific CLIA-reactive IgM/IgG in COVID-19 individuals. the positivity rates for binding and neutralizing […]