- Further investigation is needed regarding protective effects of the antibodies at different titer levels
- Additional studies are needed to assess whether antibody responses protect against re-infection


Syracuse University

University of Michigan - Ann Arbor

The authors found the titers are stable for about 3 months and overall, have high neutralizing activity, especially among the moderate and high titer categories. They concluded this evidence further validates the applicability of using antibody titers to refer COVID-19 recovered individuals for plasma donation. The authors attributed the titer increase among low and moderate categories over time to a slower seroconversion in mild cases.

SARS-CoV-2 infection induces robust, neutralizing antibody responses that are stable for at least three months: Discussion

Wajnberg, A., Amanat, F., Firpo, A. et al. 2020. SARS-CoV-2 infection induces robust, neutralizing antibody responses that are stable for at least three months. 
* doi: https://doi.org/10.1101/2020.07.14.20151126

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