Cited by 189Influenza Virus Research StudiesFrailty in Older AdultsRespiratory viral infections research

Frailty is associated with impairment of vaccine-induced antibody response and increase in post-vaccination influenza infection in community-dwelling older adults

Open access
Yao, Xu, Hamilton, Robert G., Weng, Nan-ping, Xue, Qian-Li, Bream, Jay H., Li, Huifen, Tian, Jing, Yeh, Shu-Hui +5 more·2011·Vaccine

Abstract

Annual immunization with a trivalent inactivated vaccine (TIV) is considered efficacious for prevention of seasonal influenza in older adults. However, significant controversy exists in the current literature regarding the clinical effectiveness of TIV immunization in this highly heterogeneous population. Frailty is an important geriatric syndrome characterized by decreased physiologic reserve and increased vulnerability to stressors. Using a validated set of frailty criteria, we conducted a prospective observational study to evaluate TIV-induced strain-specific hemagglutination inhibition (HI) antibody titers and post-vaccination rates of influenza-like illness (ILI) and infection in frail and nonfrail older adults. The results indicate that frailty was associated with significant impairment in TIV-induced strain-specific HI titers and increased rates of ILI and laboratory-confirmed influenza infection. These findings suggest that assessing frailty status in the elderly may identify those who are less likely to respond to TIV immunization and be at higher risk for seasonal influenza and its complications.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.vaccine.2011.04.077

Cites

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Frailty is linked to weaker antibody responses to influenza and pneumococcal vaccines, which may explain why vaccination benefits older people only modestly.

    “Furthermore, frailty is associated with an impaired antibody response to influenza (63) and pneumococcal vaccine (64), which helps explain the observation that vaccination in older people is associated with only relatively modest clinical effectiveness (65).”

    From Frailty in elderly people (2013) · cites this paper as [63]

  • Frailty impacts susceptibility to influenza and responsiveness to influenza vaccine in elderly patients.

    “In elderly patients, frailty, a multifactorial syndrome characterized by reduced stress resistance and physiological reserve [151, 152], and associated with increased serum levels of IL-6 [153], has been shown to impact susceptibility to influenza and responsiveness to influenza vaccine [154].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

The citation lists haven’t been fetched yet

References 46 · Cited by 189

Research works printed but not linked: 1

  1. [19]Fried LP Walston J Halter JB Frailty Hazzard’s principles of geriatric medicine and gerontology 2007 6th ed. Anne Arbor McGraw-Hill

Authors
Yao, X., Hamilton, R. G., Weng, N.-P., Xue, Q.-L., Bream, J. H., Li, H., Tian, J., Yeh, S.-H., Resnick, B., Xu, X., Walston, J., Fried, L. P., & Leng, S. X.
Affiliations
  • Johns Hopkins University (US)
  • National Institute on Aging (US)
  • University of Maryland, Baltimore (US)
  • Centers for Disease Control and Prevention (US)
  • Columbia University (US)
Corresponding author
Leng, Sean X.
Venue
Vaccine
Publisher
Elsevier BV
Published
2011-07
Volume
29
Issue
31
Pages
5015-5021
ISSN
0264-410X (ISSN-L)
OpenAlex
W2073120237
Cited by
189
References
46
Citations by year
2026: 8 · 2025: 6 · 2024: 6 · 2023: 13 · 2022: 17 · 2021: 29 · 2020: 20 · 2019: 18 · 2018: 9 · 2017: 8 · 2016: 15 · 2015: 7 · 2014: 9 · 2013: 14 · 2012: 8
FWCI
7.95
Type
journal article
Language
en
Open access
Locations
  • Vaccine (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • John A. Hartford Foundation
  • Johns Hopkins University
  • Starr Foundation
  • National Institutes of Health (5r37ag019905-10)
  • National Institute on Aging (R37-AG019905, K23AG028963, P30AG021334)
  • National Institute of Allergy and Infectious Diseases (R01AI070594)
Topics
  • Health Sciences › Medicine › Epidemiology › Influenza Virus Research Studies
  • Health Sciences › Medicine › Geriatrics and Gerontology › Frailty in Older Adults
  • Health Sciences › Medicine › Epidemiology › Respiratory viral infections research
Keywords
frailty, seasonal influenza vaccine, trivalent inactivated vaccine, antibody response, hemagglutination inhibition titers, influenza-like illness, influenza, older adults, vaccine response, geriatric syndromes
MeSH terms
Aged, Aged, 80 and over, Antibodies, Viral, Female, Hemagglutination Inhibition Tests, Humans, Influenza, Human, Influenza Vaccines, Male, Prospective Studies, Vaccines, Inactivated, Incidence, Frail Elderly

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review