by Delthia Ricks, Medical Xpress FIG. 1. Plasma neutralizing titers against variants of concern wane over time in samples from an outpatient COVID-19 infection cohort.(A) Study participants were enrolled (day 0) within three days of a positive SARS-CoV-2 PCR test (+PCR). Longitudinal plasma samples from day 28 (n=23), day 210 (n=23) and day 300 (n=8)...
