Figure 1.
Increase of anti–receptor-binding domain (RBG) IgG antibody titers after the third vaccination against SARS-CoV-2. The horizontal dotted line indicates the cut-off for protection (100 arbitrary units (AU)/mL).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.