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Vaccine effectiveness against infection and onwards transmission of COVID-19 : analysis of Belgian contact tracing data, January-June 2021

Toon Braeye, Laura Cornelissen, Lucy Catteau, Freek Haarhuis, Kristiaan Proesmans, Karin De Ridder, Achille Djiena, Romain Mahieu, Frances De Leeuw, Alex Dreuw, et al.
(2021) VACCINE. 39(39). p.5456-5460
Author
Organization
Abstract
In Belgium, high-risk contacts of an infected person were offered PCR-testing irrespective of their vacci-nation status. We estimated vaccine effectiveness (VE) against infection and onwards transmission, con-trolling for previous infections, household-exposure and temporal trends. We included 301,741 tests from 25 January to 24 June 2021. Full-schedule vaccination was associated with significant protection against infection. In addition, mRNA-vaccines reduced onward transmission: VE-estimates increased to >90% when index and contact were fully vaccinated. The small number of viral-vector vaccines included limited interpretability. (C) 2021 The Author(s). Published by Elsevier Ltd.
Keywords
Infectious Diseases, Public Health, Environmental and Occupational Health, General Veterinary, General Immunology and Microbiology, Molecular Medicine

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Citation

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MLA
Braeye, Toon, et al. “Vaccine Effectiveness against Infection and Onwards Transmission of COVID-19 : Analysis of Belgian Contact Tracing Data, January-June 2021.” VACCINE, vol. 39, no. 39, 2021, pp. 5456–60, doi:10.1016/j.vaccine.2021.08.060.
APA
Braeye, T., Cornelissen, L., Catteau, L., Haarhuis, F., Proesmans, K., De Ridder, K., … Van Cauteren, D. (2021). Vaccine effectiveness against infection and onwards transmission of COVID-19 : analysis of Belgian contact tracing data, January-June 2021. VACCINE, 39(39), 5456–5460. https://doi.org/10.1016/j.vaccine.2021.08.060
Chicago author-date
Braeye, Toon, Laura Cornelissen, Lucy Catteau, Freek Haarhuis, Kristiaan Proesmans, Karin De Ridder, Achille Djiena, et al. 2021. “Vaccine Effectiveness against Infection and Onwards Transmission of COVID-19 : Analysis of Belgian Contact Tracing Data, January-June 2021.” VACCINE 39 (39): 5456–60. https://doi.org/10.1016/j.vaccine.2021.08.060.
Chicago author-date (all authors)
Braeye, Toon, Laura Cornelissen, Lucy Catteau, Freek Haarhuis, Kristiaan Proesmans, Karin De Ridder, Achille Djiena, Romain Mahieu, Frances De Leeuw, Alex Dreuw, Naima Hammami, Sophie Quoilin, Herman Van Oyen, Chloé Wyndham-Thomas, and Dieter Van Cauteren. 2021. “Vaccine Effectiveness against Infection and Onwards Transmission of COVID-19 : Analysis of Belgian Contact Tracing Data, January-June 2021.” VACCINE 39 (39): 5456–5460. doi:10.1016/j.vaccine.2021.08.060.
Vancouver
1.
Braeye T, Cornelissen L, Catteau L, Haarhuis F, Proesmans K, De Ridder K, et al. Vaccine effectiveness against infection and onwards transmission of COVID-19 : analysis of Belgian contact tracing data, January-June 2021. VACCINE. 2021;39(39):5456–60.
IEEE
[1]
T. Braeye et al., “Vaccine effectiveness against infection and onwards transmission of COVID-19 : analysis of Belgian contact tracing data, January-June 2021,” VACCINE, vol. 39, no. 39, pp. 5456–5460, 2021.
@article{8740414,
  abstract     = {{In Belgium, high-risk contacts of an infected person were offered PCR-testing irrespective of their vacci-nation status. We estimated vaccine effectiveness (VE) against infection and onwards transmission, con-trolling for previous infections, household-exposure and temporal trends. We included 301,741 tests from 25 January to 24 June 2021. Full-schedule vaccination was associated with significant protection against infection. In addition, mRNA-vaccines reduced onward transmission: VE-estimates increased to >90% when index and contact were fully vaccinated. The small number of viral-vector vaccines included limited interpretability. (C) 2021 The Author(s). Published by Elsevier Ltd.}},
  author       = {{Braeye, Toon and Cornelissen, Laura and Catteau, Lucy and Haarhuis, Freek and Proesmans, Kristiaan and De Ridder, Karin and Djiena, Achille and Mahieu, Romain and De Leeuw, Frances and Dreuw, Alex and Hammami, Naima and Quoilin, Sophie and Van Oyen, Herman and Wyndham-Thomas, Chloé and Van Cauteren, Dieter}},
  issn         = {{0264-410X}},
  journal      = {{VACCINE}},
  keywords     = {{Infectious Diseases,Public Health,Environmental and Occupational Health,General Veterinary,General Immunology and Microbiology,Molecular Medicine}},
  language     = {{eng}},
  number       = {{39}},
  pages        = {{5456--5460}},
  title        = {{Vaccine effectiveness against infection and onwards transmission of COVID-19 : analysis of Belgian contact tracing data, January-June 2021}},
  url          = {{http://doi.org/10.1016/j.vaccine.2021.08.060}},
  volume       = {{39}},
  year         = {{2021}},
}
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