Figure 1. Serum antibody concentrations. Before and 1 mo after booster vaccination, serum antibody concentrations were assessed by ELISA for the indicated serotypes. (A) GMCs. (B) Rates of seroprotection, defined as ≥0.35 μg/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.