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Dynamics of SARS‐CoV‐2 antispike RBD IgG response after vaccination. (A) Schema of the schedule for vaccination and blood test. (B) Antispike RBD IgG titer (AU/ml) and seropositive rate of antispike RBD IgG and antinucleocapsid IgG in a time‐dependent manner. RBD, receptor‐binding domain
