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Fig. 6 | BMC Immunology

Fig. 6

From: A longitudinal study of humoral immune responses induced by a 3-dose inactivated COVID-19 vaccine in an observational, prospective cohort

Fig. 6

Antibody activity of convalescent serum from COVID-19 recovery patients. A, B Comparison of anti-SARS-CoV-2 IgG and surrogate neutralizing antibody levels at T4 phase serum from 93 healthy volunteers received vaccination and serum from 15 individuals who contracted SARS-CoV-2 in February 2020 (convalescents cohort 1). C, D Comparison of anti-SARS-CoV-2 IgG and surrogate neutralizing antibody levels at T7 phase serum from 93 healthy volunteers received vaccination and serum from 5 individuals who had breakthrough infections in February 2022 (convalescents cohort 2) Statistical significance was determined by Mann–Whitney U-test. ns indicates no statically significance. **P < 0.01

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BMC Immunology

ISSN: 1471-2172

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