Cited by 393SARS-CoV-2 and COVID-19 ResearchImmune responses and vaccinationsVaccine Coverage and Hesitancy

Spike-antibody waning after second dose of BNT162b2 or ChAdOx1

Open access
Shrotri, Madhumita, Navaratnam, Annalan M D, Nguyen, Vincent, Byrne, Thomas, Geismar, Cyril, Fragaszy, Ellen, Beale, Sarah, Fong, Wing Lam Erica +4 more·2021·The Lancet

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Crossref · 10.1016/s0140-6736(21)01642-1

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  • Among 197 vaccinated people, anti-spike antibody levels fell by half between the peak at 21 to 40 days and 84 days after the second BNT162b2 dose.

    “A decrease in anti-spike (S) antibody levels by a factor of two was observed from the peak (at 21 to 40 days) to 84 days after receipt of the second dose of the BNT162b2 vaccine among 197 vaccinated persons.9”

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Authors
Shrotri, M., Navaratnam, A. M. D., Nguyen, V., Byrne, T., Geismar, C., Fragaszy, E., Beale, S., Fong, W. L. E., Patel, P., Kovar, J., Hayward, A. C., & Aldridge, R. W.
Affiliations
University College London (GB)
Corresponding author
Aldridge, Robert W
Venue
The Lancet
Publisher
Elsevier BV
Published
2021-07
Volume
398
Issue
10298
Pages
385-387
ISSN
  • 0099-5355 (ISSN-L)
  • 0140-6736
OpenAlex
W3180511106
Cited by
393
References
22
Citations by year
2026: 8 · 2025: 10 · 2024: 34 · 2023: 93 · 2022: 175 · 2021: 73
FWCI
29.69
Type
journal article
Language
en
Open access
Locations
  • The Lancet (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • Facebook Inc
  • Wellcome Trust
  • MRC
  • United Kingdom Department of Health and Social Care
Topics
  • Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
  • Life Sciences › Immunology and Microbiology › Immunology › Immune responses and vaccinations
  • Social Sciences › Health › Vaccine Coverage and Hesitancy
Keywords
BNT162b2, ChAdOx1 nCoV-19 vaccine, COVID-19 vaccines, SARS-CoV-2 spike protein, prime-boost strategy, second vaccine dose, immunogenicity, vaccine efficacy, dosing interval
MeSH terms
SARS-CoV-2, COVID-19 Vaccines, BNT162 Vaccine, ChAdOx1 nCoV-19, Aged, Antibodies, Viral, Female, Humans, Male, Middle Aged, Time Factors, Spike Glycoprotein, Coronavirus

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