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Hurstak E, Farina FR, Paasche-Orlow MK, Hahn EA, Henault LE, Moreno P, Weaver C, Marquez M, Serrano E, Thomas J, Griffith JW. COVID-19 Vaccine Confidence Mediates the Relationship between Health Literacy and Vaccination in a Diverse Sample of Urban Adults. Vaccines (Basel) 2023; 11:1848. [PMID: 38140251 PMCID: PMC10747333 DOI: 10.3390/vaccines11121848] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/01/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
We sought to analyze the relationship between health literacy, confidence in COVID-19 vaccines, and self-reported vaccination. We hypothesized that the relationship between health literacy and vaccination would be mediated by vaccine confidence. We recruited (N = 271) English- and Spanish-speaking adults in Boston and Chicago from September 2018 to September 2021. We performed a probit mediation analysis to determine if confidence in COVID-19 vaccines and health literacy predicted self-reported vaccination. We hypothesized that the relationship between health literacy and vaccination would be mediated by vaccine confidence. Participants were on average 50 years old, 65% female, 40% non-Hispanic Black, 25% Hispanic, and 30% non-Hispanic White; 231 (85%) reported at least one COVID-19 vaccination. A higher mean vaccine confidence score (t = -7.9, p < 0.001) and higher health literacy (t = -2.2, p = 0.03) were associated with vaccination, but only vaccine confidence predicted vaccination in a multivariate model. Vaccine confidence mediated the relationship between health literacy and COVID-19 vaccination (mediated effects: 0.04; 95% CI [0.02, 0.08]). We found that using a simple tool to measure vaccine confidence identified people who declined or delayed COVID-19 vaccination in a diverse sample of adults with varying levels of health literacy. Simple short survey tools can be useful to identify people who may benefit from vaccine promotion efforts and evidence-based communication strategies.
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Affiliation(s)
- Emily Hurstak
- Section of General Internal Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA 02119, USA;
| | - Francesca R. Farina
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - Michael K. Paasche-Orlow
- Department of Medicine, Tufts University School of Medicine, Tufts Medical Center, Boston, MA 02116, USA;
| | - Elizabeth A. Hahn
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - Lori E. Henault
- Section of General Internal Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, MA 02119, USA;
| | - Patricia Moreno
- Department of Public Health Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA;
| | - Claire Weaver
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - Melissa Marquez
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - Eloisa Serrano
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - Jessica Thomas
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
| | - James W. Griffith
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; (F.R.F.); (E.A.H.); (C.W.); (M.M.); (E.S.); (J.T.); (J.W.G.)
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Hong C, Holloway IW, Bednarczyk R, Javanbakht M, Shoptaw S, Gorbach PM. High Vaccine Confidence Is Associated with COVID-19 Vaccine Uptake in Gay, Bisexual, and Other Men Who Have Sex with Men Who Use Substances. LGBT Health 2023; 10:480-485. [PMID: 36976808 PMCID: PMC10468549 DOI: 10.1089/lgbt.2022.0255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
Purpose: We examined associations between vaccine confidence and COVID-19 vaccine uptake among gay, bisexual, and other men who have sex with men (GBMSM). Methods: Computer-assisted self-interviews were conducted among 249 GBMSM participating in mSTUDY from May to October 2021-a cohort of GBMSM with a history of substance use in Los Angeles. Data were collected using a vaccine confidence index. The association between vaccine confidence and COVID-19 vaccine uptake was assessed using multivariable log-binomial regression. Results: Two-thirds (64.7%) of GBMSM reported receiving at least one dose of COVID-19 vaccine. Vaccine confidence was positively associated with COVID-19 vaccine uptake. Participants expressed neutral attitudes on government trust and vaccine safety. Perceived health benefit and vaccine effectiveness were statistically significantly associated with vaccine uptake (adjusted prevalence ratio [APR] = 1.59, 95% confidence interval [CI]: 1.20-2.16; APR = 1.51, 95% CI: 1.07-2.15). Conclusions: Public health programs should prioritize public benefit and vaccine effectiveness messaging to advance vaccination among GBMSM who use substances.
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Affiliation(s)
- Chenglin Hong
- Department of Social Welfare, Luskin School of Public Affairs, University of California, Los Angeles, Los Angeles, California, USA
| | - Ian W. Holloway
- Department of Social Welfare, Luskin School of Public Affairs, University of California, Los Angeles, Los Angeles, California, USA
| | - Robert Bednarczyk
- Hubert Department of Global Health, Emory University Rollins School of Public Health, Atlanta, Georgia, USA
- Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, Georgia, USA
- Emory Vaccine Center, Emory University, Atlanta, Georgia, USA
| | - Marjan Javanbakht
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California, USA
| | - Steven Shoptaw
- Department of Family Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Pamina M. Gorbach
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California, USA
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Hurstak EE, Paasche-Orlow MK, Hahn EA, Henault LE, Taddeo MA, Moreno PI, Weaver C, Marquez M, Serrano E, Thomas J, Griffith JW. The mediating effect of health literacy on COVID-19 vaccine confidence among a diverse sample of urban adults in Boston and Chicago. Vaccine 2023; 41:2562-2571. [PMID: 36907736 PMCID: PMC9977617 DOI: 10.1016/j.vaccine.2023.02.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 02/03/2023] [Accepted: 02/19/2023] [Indexed: 03/06/2023]
Abstract
BACKGROUND A high rate of COVID-19 vaccination is critical to reduce morbidity and mortality related to infection and to control the COVID-19 pandemic. Understanding the factors that influence vaccine confidence can inform policies and programs aimed at vaccine promotion. We examined the impact of health literacy on COVID-19 vaccine confidence among a diverse sample of adults living in two major metropolitan areas. METHODS Questionnaire data from adults participating in an observational study conducted in Boston and Chicago from September 2018 through March 2021 were examined using path analyses to determine whether health literacy mediates the relationship between demographic variables and vaccine confidence, as measured by an adapted Vaccine Confidence Index (aVCI). RESULTS Participants (N = 273) were on average 49 years old, 63 % female, 4 % non-Hispanic Asian, 25 % Hispanic, 30 % non-Hispanic white, and 40 % non-Hispanic Black. Using non-Hispanic white and other race as the reference category, Black race and Hispanic ethnicity were associated with lower aVCI (-0.76, 95 % CI -1.00 to -0.50; -0.52, 95 % CI -0.80 to -0.27, total effects from a model excluding other covariates). Lower education was also associated with lower aVCI (using college or more as the reference, -0.73 for 12th grade or less, 95 % CI -0.93 to -0.47; -0.73 for some college/associate's/technical degree, 95 % CI -1.05 to -0.39). Health literacy partially mediated these effects for Black and Hispanic participants and those with lower education (indirect effects -0.19 and -0.19 for Black race and Hispanic ethnicity; 0.27 for 12th grade or less; -0.15 for some college/associate's/technical degree). CONCLUSIONS Lower levels of education, Black race, and Hispanic ethnicity were associated with lower scores on health literacy, which in turn were associated with lower vaccine confidence. Our findings suggest that efforts to improve health literacy may improve vaccine confidence, which in turn may improve vaccination rates and vaccine equity. CLINICAL TRIALS NUMBER NCT03584490.
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Affiliation(s)
- Emily E Hurstak
- Section of General Internal Medicine, Boston University School of Medicine, 801 Massachusetts Avenue, Boston, MA 02118, USA.
| | | | - Elizabeth A Hahn
- Department of Medical Social Sciences Northwestern Feinberg School of Medicine 625 N. Michigan Ave., Chicago, IL 60611, USA.
| | - Lori E Henault
- Section of General Internal Medicine, Boston University School of Medicine, 801 Massachusetts Avenue, Boston, MA 02118, USA.
| | - Michelle A Taddeo
- Department of Medical Social Sciences Northwestern Feinberg School of Medicine 625 N. Michigan Ave., Chicago, IL 60611, USA.
| | - Patricia I Moreno
- Department of Public Health Sciences, University of Miami Miller School of Medicine, 1120 NW 14th Street, Miami, FL 33136, USA.
| | - Claire Weaver
- Department of Medical Social Sciences Northwestern Feinberg School of Medicine 625 N. Michigan Ave., Chicago, IL 60611, USA.
| | - Melissa Marquez
- Department of Medical Social Sciences Northwestern Feinberg School of Medicine 625 N. Michigan Ave., Chicago, IL 60611, USA.
| | - Eloisa Serrano
- Department of Medical Social Sciences Northwestern Feinberg School of Medicine 625 N. Michigan Ave., Chicago, IL 60611, USA.
| | - Jessica Thomas
- Department of Medical Social Sciences Northwestern Feinberg School of Medicine 625 N. Michigan Ave., Chicago, IL 60611, USA.
| | - James W Griffith
- Department of Medical Social Sciences Northwestern Feinberg School of Medicine 625 N. Michigan Ave., Chicago, IL 60611, USA.
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Bussink-Voorend D, Hautvast JLA, Vandeberg L, Visser O, Hulscher MEJL. A systematic literature review to clarify the concept of vaccine hesitancy. Nat Hum Behav 2022; 6:1634-1648. [PMID: 35995837 DOI: 10.1038/s41562-022-01431-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 07/13/2022] [Indexed: 11/25/2022]
Abstract
Vaccine hesitancy (VH) is considered a top-10 global health threat. The concept of VH has been described and applied inconsistently. This systematic review aims to clarify VH by analysing how it is operationalized. We searched PubMed, Embase and PsycINFO databases on 14 January 2022. We selected 422 studies containing operationalizations of VH for inclusion. One limitation is that studies of lower quality were not excluded. Our qualitative analysis reveals that VH is conceptualized as involving (1) cognitions or affect, (2) behaviour and (3) decision making. A wide variety of methods have been used to measure VH. Our findings indicate the varied and confusing use of the term VH, leading to an impracticable concept. We propose that VH should be defined as a state of indecisiveness regarding a vaccination decision.
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Affiliation(s)
- Daphne Bussink-Voorend
- Radboud University Medical Center, Radboud Institute for Health Sciences, Primary and Community Care, Nijmegen, the Netherlands.
| | - Jeannine L A Hautvast
- Radboud University Medical Center, Radboud Institute for Health Sciences, Primary and Community Care, Nijmegen, the Netherlands
| | - Lisa Vandeberg
- Behavioural Science Institute, Radboud University, Nijmegen, the Netherlands
| | - Olga Visser
- Radboud University Medical Center, Radboud Institute for Health Sciences, Primary and Community Care, Nijmegen, the Netherlands
| | - Marlies E J L Hulscher
- Radboud University Medical Center, Radboud Institute for Health Sciences, IQ Healthcare, Nijmegen, the Netherlands
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Frew PM, Schamel JT, Randall LA, King AR, Spaulding AC, Wu E, Holloway IW. Vaccine confidence among people who use drugs: A cross-sectional survey. Hum Vaccin Immunother 2022; 18:2123201. [PMID: 36170655 DOI: 10.1080/21645515.2022.2123201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Adult immunization coverage remains low in the US, particularly for people who use drugs (PWUD), a population that experiences a disproportionate burden of vaccine-preventable diseases. The extent of and characteristics associated with vaccine confidence (VC) held by PWUD is poorly understood. As VC strongly correlates with vaccine uptake, this cross-sectional study identifies mutable factors associated with VC and quantifies its relationship to immunization status within a highly vulnerable, underimmunized population of PWUD. Using a community-engaged research strategy with select partner organizations hosting syringe exchange programs in Atlanta, Los Angeles, and Las Vegas, USA, we surveyed participants ages 18-69 years served by these organizations from 2019 to 2020. Survey measures included sociodemographics, health behavior including immunization receipt, and vaccine confidence in adult vaccinations using a modified Emory Vaccine Confidence Index (EVCI). The findings reflect relatively low VC among the 1,127 recruited participants, with 56% expressing low VC (EVCI 0-12), 35% medium (EVCI 13-20) and 10% high (EVCI 21-24). EVCI varied by city, with lowest confidence in Atlanta and highest in Las Vegas. VC was associated with past receipt of specific vaccines, including hepatitis A, MMR, Tdap, and influenza. VC varied by specific sociodemographic correlates such as housing insecurity (reduced confidence) and receipt of public benefits or disability (increased confidence). This study identified correlates associated with VC based on site and sociodemographic characteristics for this priority population, highlighting the need for specific interventions to raise VC among PWUD, especially among those experiencing housing insecurity and without public benefits.
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Affiliation(s)
- Paula M Frew
- Schools of Public Health, Medicine, and Integrated Health Sciences, University of Nevada, Las Vegas, NV, USA.,Population Health & Health Equity Initiative, University of Nevada, Las Vegas, NV, USA
| | - Jay T Schamel
- Schools of Public Health, Medicine, and Integrated Health Sciences, University of Nevada, Las Vegas, NV, USA.,Population Health & Health Equity Initiative, University of Nevada, Las Vegas, NV, USA
| | - Laura A Randall
- Schools of Public Health, Medicine, and Integrated Health Sciences, University of Nevada, Las Vegas, NV, USA.,Population Health & Health Equity Initiative, University of Nevada, Las Vegas, NV, USA
| | - Adrian R King
- Schools of Public Health, Medicine, and Integrated Health Sciences, University of Nevada, Las Vegas, NV, USA.,Population Health & Health Equity Initiative, University of Nevada, Las Vegas, NV, USA
| | - Anne C Spaulding
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA.,Department of Medicine, Division of Infectious Diseases, Emory University School of Medicine, Atlanta, GA, USA
| | - Elizabeth Wu
- Department of Social Welfare, UCLA Luskin School of Public Affairs, Los Angeles, CA, USA.,Southern California HIV/AIDS Policy Research Center, UCLA Luskin School of Public Affairs, Los Angeles, CA, USA.,UCLA Hub for Health Intervention, Policy, and Practice, UCLA Luskin School of Public Affairs, Los Angeles, CA, USA
| | - Ian W Holloway
- Department of Social Welfare, UCLA Luskin School of Public Affairs, Los Angeles, CA, USA.,Southern California HIV/AIDS Policy Research Center, UCLA Luskin School of Public Affairs, Los Angeles, CA, USA.,UCLA Hub for Health Intervention, Policy, and Practice, UCLA Luskin School of Public Affairs, Los Angeles, CA, USA
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6
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Holloway IW. Lessons for Community-Based Scale-Up of Monkeypox Vaccination From Previous Disease Outbreaks Among Gay, Bisexual, and Other Men Who Have Sex With Men in the United States. Am J Public Health 2022; 112:1572-1575. [PMID: 35981275 PMCID: PMC9558182 DOI: 10.2105/ajph.2022.307075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/01/2022] [Indexed: 11/04/2022]
Affiliation(s)
- Ian W Holloway
- Ian W. Holloway is with the Department of Social Welfare, Luskin School of Public Affairs, University of California, Los Angeles (UCLA), and is the director of the UCLA Gay Sexuality and Social Policy Initiative
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7
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Kolobova I, Nyaku MK, Karakusevic A, Bridge D, Fotheringham I, O'Brien M. Vaccine uptake and barriers to vaccination among at-risk adult populations in the US. Hum Vaccin Immunother 2022; 18:2055422. [PMID: 35536017 PMCID: PMC9248946 DOI: 10.1080/21645515.2022.2055422] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
To reduce morbidity and mortality associated with vaccine-preventable diseases (VPD), it is imperative that vaccination programs are implemented and prioritized throughout all stages of life across all populations. This study aimed to determine vaccine uptake and barriers to vaccination against VPDs among at-risk adult populations in the United States. We conducted a systematic literature review for articles published between January 2010 and June 2020 and identified 153 publications. The review identified 17 at-risk populations. Vaccine uptake was suboptimal among many populations, with factors including age, gender, and disease severity, associated with uptake. This review identified several barriers that impact vaccine uptake among at-risk populations, with concerns over safety, vaccine costs, lack of insurance, and lack of provider recommendation commonly reported across populations. Embracing a national life-course immunization framework that integrates developing policies, guidelines, and education would be a step to addressing these barriers.
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Affiliation(s)
- Irina Kolobova
- Center for Observational and Real World Evidence, Merck & Co., Inc., Kenilworth, NJ, USA
| | - Mawuli Kwame Nyaku
- Center for Observational and Real World Evidence, Merck & Co., Inc., Kenilworth, NJ, USA
| | | | | | | | - Megan O'Brien
- Center for Observational and Real World Evidence, Merck & Co., Inc., Kenilworth, NJ, USA
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de Oliveira Costa J, Gianacas C, Beard F, Gonzalez-Chica D, Chidwick K, Osman R, MacIntyre CR, Havard A. Cumulative annual coverage of meningococcal B vaccination in Australian general practice for three at-risk groups, 2014 to 2019. Hum Vaccin Immunother 2021; 17:3692-3701. [PMID: 34047673 DOI: 10.1080/21645515.2021.1923349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Neisseria meningitidis serogroup B (MenB) is the most common cause of meningococcal disease in adolescents and young adults. In Australia, MenB vaccination has been available through private prescription since 2014 and has been recommended for at-risk groups including adolescents, young adults who smoke and people medically at risk. For each of these at-risk groups, we estimated cumulative annual coverage of MenB vaccination between 2014 and 2019. We also evaluated factors associated with vaccination coverage in 2019. Our analyses used electronic health records in the national MedicineInsight database for people regularly attending general practices. Cumulative vaccination coverage increased among the at-risk groups between 2014 and 2019: from 0.09% to 1.65% for adolescents, from 0.01% to 0.15% for young adults who smoke, and from 0.35% to 12.09% for people medically at risk. However, vaccination coverage in 2019 remained very low across these groups. Data sparsity prevented the evaluation of factors associated with vaccination coverage for smokers. We observed variation in the relative risk of being vaccinated by age, sex, socioeconomic and clinical factors for adolescents and people medically at risk. Still, the absolute magnitude of coverage was low across all subgroups examined, and indicates a need for strategies to increase vaccination uptake among at-risk groups irrespective of patient and practice characteristics. Our study provides baseline data for monitoring menB vaccination uptake among recommended groups in light of limited national data, especially for medically at-risk groups.
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Affiliation(s)
- Juliana de Oliveira Costa
- NPS MedicineWise, Sydney, Australia.,Medicines Policy Research Unit, Centre for Big Data Research in Health, UNSW Sydney, Sydney, Australia
| | | | - Frank Beard
- National Centre for Immunisation Research and Surveillance, Children's Hospital at Westmead, Sydney, Australia.,School of Public Health, University of Sydney, Sydney, Australia
| | - David Gonzalez-Chica
- Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, Australia
| | | | | | - C Raina MacIntyre
- Biosecurity Program, The Kirby Institute, UNSW Sydney, Sydney, Australia
| | - Alys Havard
- NPS MedicineWise, Sydney, Australia.,Medicines Policy Research Unit, Centre for Big Data Research in Health, UNSW Sydney, Sydney, Australia
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