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Influenza vaccine coverage and factors associated with non-vaccination among adults at high risk for severe outcomes: An analysis of the Canadian Longitudinal Study on Aging

BACKGROUND: Influenza vaccination is recommended in Canada for older adults and those with underlying health conditions due to their increased risk of severe outcomes. Further research is needed to identify who within these groups is not receiving influenza vaccine to identify opportunities to incre...

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Autores principales: Gravagna, Katie, Wolfson, Christina, Sulis, Giorgia, Buchan, Sarah A., McNeil, Shelly, Andrew, Melissa K., McMillan, Jacqueline, Kirkland, Susan, Basta, Nicole E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9524702/
https://www.ncbi.nlm.nih.gov/pubmed/36178943
http://dx.doi.org/10.1371/journal.pone.0275135
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author Gravagna, Katie
Wolfson, Christina
Sulis, Giorgia
Buchan, Sarah A.
McNeil, Shelly
Andrew, Melissa K.
McMillan, Jacqueline
Kirkland, Susan
Basta, Nicole E.
author_facet Gravagna, Katie
Wolfson, Christina
Sulis, Giorgia
Buchan, Sarah A.
McNeil, Shelly
Andrew, Melissa K.
McMillan, Jacqueline
Kirkland, Susan
Basta, Nicole E.
author_sort Gravagna, Katie
collection PubMed
description BACKGROUND: Influenza vaccination is recommended in Canada for older adults and those with underlying health conditions due to their increased risk of severe outcomes. Further research is needed to identify who within these groups is not receiving influenza vaccine to identify opportunities to increase coverage. OBJECTIVES: We aimed to 1) estimate influenza non-vaccination prevalence and 2) assess factors associated with non-vaccination among Canadian adults aged ≥65 and adults aged 46–64 with ≥1 chronic medical condition (CMC) due to their high risk of severe influenza outcomes. METHODS: We conducted a secondary analysis of cross-sectional data collected from 2015–2018 among participants of the Canadian Longitudinal Study on Aging. For both groups of interest, we estimated non-vaccination prevalence and used logistic regression models to identify factors associated with non-vaccination. We report adjusted odds ratios and 95% confidence intervals for the investigated variables. RESULTS: Overall, 29.5% (95% CI: 28.9%, 30.1%) of the 23,226 participants aged ≥65 years and 50.4% (95% CI: 49.4%, 51.3%) of the 11,250 participants aged 46–64 years with ≥1 CMC reported not receiving an influenza vaccination in the past 12 months. For both groups, lack of recent contact with a family doctor and current smoking were independently associated with non-vaccination. DISCUSSION: Influenza vaccination helps prevent severe influenza outcomes. Yet, half of adults aged 46–64 years with ≥1 CMC and more than one-quarter of all adults aged ≥65 years did not receive a recommended influenza vaccine in the year prior to the survey. Innovation in vaccination campaigns for routinely recommended vaccines, especially among those without annual family doctor visits, may improve coverage. CONCLUSION: Influenza vaccination coverage among Canadian adults aged 46–64 years with ≥1 CMC and adults aged ≥65 years remains suboptimal. Vaccination campaigns targeting those at high risk of severe outcomes without routine physician engagement should be evaluated to improve uptake.
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spelling pubmed-95247022022-10-01 Influenza vaccine coverage and factors associated with non-vaccination among adults at high risk for severe outcomes: An analysis of the Canadian Longitudinal Study on Aging Gravagna, Katie Wolfson, Christina Sulis, Giorgia Buchan, Sarah A. McNeil, Shelly Andrew, Melissa K. McMillan, Jacqueline Kirkland, Susan Basta, Nicole E. PLoS One Research Article BACKGROUND: Influenza vaccination is recommended in Canada for older adults and those with underlying health conditions due to their increased risk of severe outcomes. Further research is needed to identify who within these groups is not receiving influenza vaccine to identify opportunities to increase coverage. OBJECTIVES: We aimed to 1) estimate influenza non-vaccination prevalence and 2) assess factors associated with non-vaccination among Canadian adults aged ≥65 and adults aged 46–64 with ≥1 chronic medical condition (CMC) due to their high risk of severe influenza outcomes. METHODS: We conducted a secondary analysis of cross-sectional data collected from 2015–2018 among participants of the Canadian Longitudinal Study on Aging. For both groups of interest, we estimated non-vaccination prevalence and used logistic regression models to identify factors associated with non-vaccination. We report adjusted odds ratios and 95% confidence intervals for the investigated variables. RESULTS: Overall, 29.5% (95% CI: 28.9%, 30.1%) of the 23,226 participants aged ≥65 years and 50.4% (95% CI: 49.4%, 51.3%) of the 11,250 participants aged 46–64 years with ≥1 CMC reported not receiving an influenza vaccination in the past 12 months. For both groups, lack of recent contact with a family doctor and current smoking were independently associated with non-vaccination. DISCUSSION: Influenza vaccination helps prevent severe influenza outcomes. Yet, half of adults aged 46–64 years with ≥1 CMC and more than one-quarter of all adults aged ≥65 years did not receive a recommended influenza vaccine in the year prior to the survey. Innovation in vaccination campaigns for routinely recommended vaccines, especially among those without annual family doctor visits, may improve coverage. CONCLUSION: Influenza vaccination coverage among Canadian adults aged 46–64 years with ≥1 CMC and adults aged ≥65 years remains suboptimal. Vaccination campaigns targeting those at high risk of severe outcomes without routine physician engagement should be evaluated to improve uptake. Public Library of Science 2022-09-30 /pmc/articles/PMC9524702/ /pubmed/36178943 http://dx.doi.org/10.1371/journal.pone.0275135 Text en © 2022 Gravagna et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Gravagna, Katie
Wolfson, Christina
Sulis, Giorgia
Buchan, Sarah A.
McNeil, Shelly
Andrew, Melissa K.
McMillan, Jacqueline
Kirkland, Susan
Basta, Nicole E.
Influenza vaccine coverage and factors associated with non-vaccination among adults at high risk for severe outcomes: An analysis of the Canadian Longitudinal Study on Aging
title Influenza vaccine coverage and factors associated with non-vaccination among adults at high risk for severe outcomes: An analysis of the Canadian Longitudinal Study on Aging
title_full Influenza vaccine coverage and factors associated with non-vaccination among adults at high risk for severe outcomes: An analysis of the Canadian Longitudinal Study on Aging
title_fullStr Influenza vaccine coverage and factors associated with non-vaccination among adults at high risk for severe outcomes: An analysis of the Canadian Longitudinal Study on Aging
title_full_unstemmed Influenza vaccine coverage and factors associated with non-vaccination among adults at high risk for severe outcomes: An analysis of the Canadian Longitudinal Study on Aging
title_short Influenza vaccine coverage and factors associated with non-vaccination among adults at high risk for severe outcomes: An analysis of the Canadian Longitudinal Study on Aging
title_sort influenza vaccine coverage and factors associated with non-vaccination among adults at high risk for severe outcomes: an analysis of the canadian longitudinal study on aging
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9524702/
https://www.ncbi.nlm.nih.gov/pubmed/36178943
http://dx.doi.org/10.1371/journal.pone.0275135
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