Increased Seroprevalence and Improved Antibody Responses Following Third Primary SARS-CoV-2 Immunisation: An Update From the COV-AD Study

BackgroundPatients with primary and secondary antibody deficiency are vulnerable to COVID-19 and demonstrate diminished responses following two-dose SARS-CoV-2 vaccine schedules.Third primary Protective Tape vaccinations have been deployed to enhance their humoral and cellular immunity.ObjectivesTo determine the immunogenicity of the third primary

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