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the claim

The third dose of a COVID-19 vaccine boosts antibody levels

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Clinical studies consistently show that administering a third dose of a COVID-19 vaccine substantially increases antibody levels and enhances immune protection.

The analysis

All retrieved papers provide empirical evidence showing that a third dose (booster) of various COVID-19 vaccines effectively increases antibody titers and enhances humoral immune response. There is no contradictory evidence presented in the provided papers.

Evidence for · 4
Significant Increase in Antibody Titers after the 3rd Booster Dose of the Pfizer–BioNTech mRNA COVID-19 Vaccine in Healthcare Workers in Greece
Recorded source metadata

Konstantina Kontopoulou, Christos T. Nakas, Georgios Papazisis. Significant Increase in Antibody Titers after the 3rd Booster Dose of the Pfizer–BioNTech mRNA COVID-19 Vaccine in Healthcare Workers in Greece. 2022. https://doi.org/10.3390/vaccines10060876

Paper 0 found that the third booster dose of the Pfizer-BioNTech vaccine significantly increased anti-S1 RBD IgG antibody titers in healthcare workers.

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More for · 3
Third BNT162b2 Vaccine Booster Dose against SARS-CoV-2-Induced Antibody Response among Healthcare Workers
Recorded source metadata

Khetam Hussein, Halima Dabaja-Younis, Moran Szwarcwort-Cohen, Ronit Almog, Ronit Leiba, Avi Weissman, Michal Mekel, Gila Hyams, Nethanel A. Horowitz, Vardit Gepstein, Hagar Cohen Saban, Jalal Tarabeia, Michael Halberthal, Yael Shachor-Meyouhas. Third BNT162b2 Vaccine Booster Dose against SARS-CoV-2-Induced Antibody Response among Healthcare Workers. 2022. https://doi.org/10.3390/vaccines10101741

Paper 1 reported that the third BNT162b2 booster dose improved immunogenicity by yielding higher antibody concentrations among tested healthcare workers.

Antibody Response after 3-Dose Booster against SARS-CoV-2 mRNA Vaccine in Kidney Transplant Recipients
Recorded source metadata

Domenico Tripodi, Roberto Dominici, Davide Sacco, Gennaro Santorelli, Rodolfo Rivera, Sandro Acquaviva, Marino Marchisio, Paolo Brambilla, Graziana Battini, Valerio Leoni. Antibody Response after 3-Dose Booster against SARS-CoV-2 mRNA Vaccine in Kidney Transplant Recipients. 2024. https://doi.org/10.3390/vaccines12030264

Paper 2 observed a significant increase in antibody response post-booster among kidney transplant recipients.

Immunogenicity and Safety of the Third Booster Dose with Homologous or Heterologous COVID-19 Vaccine After Completing Primary Series of Inactivated Vaccine (CoronaVac) or Adenovirus Vector Vaccine (AZD1222) in Thai Adults
Recorded source metadata

Suvichada Assawakosri. Immunogenicity and Safety of the Third Booster Dose with Homologous or Heterologous COVID-19 Vaccine After Completing Primary Series of Inactivated Vaccine (CoronaVac) or Adenovirus Vector Vaccine (AZD1222) in Thai Adults. https://doi.org/10.58837/chula.the.2023.672

Paper 4 demonstrated that heterologous booster vaccines significantly enhance binding and neutralizing antibody levels following primary vaccination series.

The paper trail · every fact has a biography
first checked31 Jul 2026
judged → SUPPORTED · 8431 Jul 2026
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