Disparities In Influenza Vaccination Research Articles

Racial and ethnic minority status in country of birth modifies racial and ethnic disparities in influenza vaccination among New York City adults

BackgroundUnderstanding the relationship between race/ethnicity, birthplace, and health outcomes is important for reducing health disparities. This study assessed the relationship between racial/ethnic identity and minority racial/ethnic status in country of birth on influenza vaccination among New York City (NYC) adults. MethodsUsing 2015–2019 data from NYC’s Community Health Surveys, we assessed the association between racial/ethnic identity and racial/ethnic minority status in birth country with past year influenza vaccination, calculating prevalence differences per 100 and assessing interaction on the additive scale using linear binomial regression, and prevalence ratios and interaction on the multiplicative scale using log-binomial regression. ResultsEffect modification between race/ethnicity and minority racial/ethnic status in birth country was significant on the additive scale for Hispanic (p = 0.018) and Black (p = 0.025) adults and the multiplicative scale for Hispanic adults (p = 0.040). After stratifying by racial/ethnic minority or majority status in birth country, vaccination was significantly lower among Black adults compared with White adults among those in the minority (adjusted prevalence difference [aPD]=−12.98, 95%CI: −22.88-(−2.92)) and significantly higher among Hispanic adults compared with White adults among those in the majority (aPD=9.28, 95%CI: 7.35–11.21). ConclusionsRacial/ethnic minority status in birth country is an important factor when examining racial/ethnic differences in vaccination status.

Prevalence and disparities in influenza vaccination among patients with COPD: A French nationwide population study

IntroductionDespite concordant international recommendations, many surveys found disappointing rates of influenza vaccination in at-risk populations, ranging from 23% in overall COPD population to more than 70% in more severe COPD subjects. Therefore, we assessed the proportion of French COPD patients non-vaccinated for influenza and their clinical and socio-demographic factors. Materiel and methodsThis was a national retrospective study based on the French health insurance database. We identified “diagnosed COPD”, defined as subjects hospitalized at least once in 2017 with a principal or associated diagnosis of COPD, and “suspected COPD” as those who were prescribed at least thrice long-acting bronchodilators (LAB), after exclusion of patients with a principal diagnosis or secondary associated diagnosis of asthma or cystic fibrosis, patients deceased before the influenza season and patients hospitalized in long-term or in palliative care unit. Multivariate logistic regression was used to assess the association between patients’ characteristics and the lack of influenza vaccination. ResultsFrom the national database, 1 474 396 subjects were identified as “suspected COPD” of whom 528 114 were excluded because of previous diagnosis of asthma or cystic fibrosis, and 350 566 as “diagnosed COPD”. Among the 1 296 848 patients included, 646 687 patients (53.3%) were vaccinated against influenza. Non-vaccinated subjects were significantly younger (62.1 vs 71.6 years old), more often women (47.9% vs 43.1%) and had fewer comorbidities assessed by Charlson's index (3.0 ± 2.2 vs 4.3 ± 2.1). Lack of vaccination was also associated with a lower LAB usage. Also, non-vaccinated subjects neither had severe exacerbation during the study period. Besides there was a significant heterogeneity in vaccination rate by geographic region, from 47% to 57%. In multivariate analysis, variables independently associated with the lack of influenza vaccination were female gender, younger age, fewer comorbidities and lower socio-economic level. ConclusionsThis study using the French exhaustive health insurance database shows that influenza vaccination among COPD patients remains dramatically low and must become a high-priority public-health strategy.

Geospatial Distribution of Racial Disparities in Influenza Vaccination in Nursing Homes

ObjectivesThis study aimed to assess the distribution of racial disparities in influenza vaccination between White and Black short-stay and long-stay nursing home residents among states and hospital referral regions (HRRs). DesignRetrospective cohort study. Setting and ParticipantsWe included short-stay and long-stay older adults residing in US nursing homes during influenza seasons between 2011 and 2018. Included residents were aged ≥65 years and enrolled in Traditional Medicare. Analyses were conducted using resident-seasons, whereby residents could contribute to one or more influenza seasons if they resided in a nursing home across multiple seasons. MethodsOur comparison of interest was marginalized vs privileged racial group membership measured as Black vs White race. We obtained influenza vaccination documentation from resident Minimum Data Set assessments from October 1 through June 30 of a particular influenza season. Nonparametric g-formula was used to estimate age- and sex-standardized disparities in vaccination, measured as the percentage point (pp) difference in the proportions of individuals vaccinated between Black and White nursing home residents within states and HRRs. ResultsThe study included 7,807,187 short-stay resident-seasons (89.7% White and 10.3% Black) in 14,889 nursing homes and 7,308,111 long-stay resident-seasons (86.7% White and 13.3% Black) in 14,885 nursing homes. Among states, the median age- and sex-standardized disparity between Black and White residents was 10.1 percentage points (pps) among short-stay residents and 5.3 pps among long-stay residents across seasons. Among HRRs, the median disparity was 8.6 pps among short-stay residents and 5.0 pps among long-stay residents across seasons. Conclusions and ImplicationsOur analysis revealed that the magnitudes of vaccination disparities varied substantially across states and HRRs, from no disparity in vaccination to disparities in excess of 25 pps. Local interventions and policies should be targeted to high-disparity geographic areas to increase vaccine uptake and promote health equity.

Disparities in influenza vaccination for U.S. adults with disabilities living in community settings by race/ethnicity, 2016–2021

BackgroundThere is a paucity of data examining disparities in influenza vaccination at the intersection of disability and race. ObjectiveTo compare the prevalence of influenza vaccination between U.S. adults (≥18 years) with and without disabilities living in community settings, and to examine changes in influenza vaccination over time by disability status and race/ethnicity groups. MethodsWe analyzed cross-sectional data from the Behavioral Risk Factor Surveillance System (2016–2021). We calculated the annual age-standardized prevalence of influenza vaccination (last 12 months) in individuals with and without disabilities (2016–2021), and examined percentage changes (2016–2021) by groups of disability status and race/ethnicity. ResultsFrom 2016 to 2021, the annual age-standardized prevalence of influenza vaccination was consistently lower in adults with disabilities as compared to those without disabilities. In 2016, 36.8% (95%CI: 36.1%–37.4%) of adults with disabilities had an influenza vaccine versus 37.3% (95%CI: 36.9%–37.6%) of those without disabilities. In 2021, 40.7% (95%CI: 40.0%–41.4%) and 44.1% (95%CI: 43.7%–44.5%) of adults with and without disabilities had an influenza vaccine.The percentage change in influenza vaccination from 2016 to 2021 was lower among people with disabilities (10.7%, 95%CI: 10.4%–11.0%; vs. no disability: 18.4%, 95%CI: 18.1%–18.7%). Among adults with disabilities, Asian adults reported the largest percentage increase in influenza vaccination (18.0%, 95% CI: 14.2%, 21.8%; p: 0.07), and Black, Non-Hispanics adults reported the lowest (2.1%, 95% CI: 1.9%, 2.2%; p: 0.59). ConclusionsStrategies to increase influenza vaccination in the U.S. should address barriers faced by people with disabilities, particularly the intersectional barriers faced by people with disabilities from racial and ethnic minority groups.

Geographic Variation in Influenza Vaccination Disparities Between Hispanic and Non-Hispanic White US Nursing Home Residents.

Disparities in influenza vaccination exist between Hispanic and non-Hispanic White US nursing home (NH) residents, but the geographic areas with the largest disparities remain unknown. We examined how these racial/ethnic disparities differ across states and hospital referral regions (HRRs). This retrospective cohort study included >14 million short-stay and long-stay US NH resident-seasons over 7 influenza seasons from October 1, 2011, to March 31, 2018, where residents could contribute to 1 or more seasons. Residents were aged ≥65 years and enrolled in Medicare fee-for-service. We used the Medicare Beneficiary Summary File to ascertain race/ethnicity and Minimum Data Set assessments for influenza vaccination. We calculated age- and sex-standardized percentage point (pp) differences in the proportions vaccinated between non-Hispanic White and Hispanic (any race) resident-seasons. Positive pp differences were considered disparities, where the proportion of non-Hispanic White residents vaccinated was greater than the proportion of Hispanic residents vaccinated. States and HRRs with ≥100 resident-seasons per age-sex stratum per racial/ethnic group were included in analyses. Among 7 442 241 short-stay resident-seasons (94.1% non-Hispanic White, 5.9% Hispanic), the median standardized disparities in influenza vaccination were 4.3 pp (minimum, maximum: 0.3, 19.2; n = 22 states) and 2.8 pp (minimum, maximum: -3.6, 10.3; n = 49 HRRs). Among 6 758 616 long-stay resident-seasons (93.7% non-Hispanic White, 6.5% Hispanic), the median standardized differences were -0.1 pp (minimum, maximum: -4.1, 11.4; n = 18 states) and -1.8 pp (minimum, maximum: -6.5, 7.6; n = 34 HRRs). Wide geographic variation in influenza vaccination disparities existed across US states and HRRs. Localized interventions targeted toward areas with high disparities may be a more effective strategy to promote health equity than one-size-fits-all national interventions.

Influenza Vaccination Coverage Among Medicare Fee-for-Service Beneficiaries

Influenza vaccination is the best prevention strategy to protect against influenza infection. Determining accurate influenza vaccination coverage is critical. This study assesses the concordance between self-reported and claimed-based influenza vaccination coverage and examines vaccination disparities in the U.S. Data from the 2016-2019 Medicare Current Beneficiary Survey linked to survey participants' influenza vaccination claims were analyzed in 2022. The study population included survey participants aged ≥65 years and enrolled in a Medicare fee-for-service plan. Sensitivity, specificity, kappa statistics, and net bias (the difference between the estimated vaccination coverage based on survey and claims data) were reported. Associations between receipt of influenza vaccine and beneficiaries' characteristics and sex, racial and ethnic, and urban‒rural disparities in influenza vaccination were examined using logistic regressions. The analysis included 20,854 beneficiaries. Claimed-based vaccination coverage was 60.0%, and survey-based coverage was 76.3%. The net bias was 16.3 percentage points, and kappa statistic indicated moderate data agreement. The sensitivity of self-reported influenza vaccination was 98.7%, and the specificity was 57.4%. Net bias was high among male, non-Hispanic Black and Hispanic beneficiaries, and rural residents. Sex, racial and ethnic, and urban‒rural disparities in influenza vaccination were noticeably smaller according to the survey than claims data. The level of data agreement differed by beneficiaries' characteristics and was low among males, racial and ethnic minority groups, and rural residents.

County Social Vulnerability and Influenza Vaccine Rates: National and Local Estimates for Medicare Recipients

Seasonal influenza vaccination among older adults is well below the recommendation of Healthy People 2020. Although geographic disparities in influenza vaccination are well documented, it remains unclear how community attributes correlate with influenza vaccination rates. Social vulnerability measures play an important role in interventions addressing vaccine equity; however, social vulnerability dimensions as corollaries of vaccination are poorly understood. To inform vaccine equity interventions, this analysis investigates spatially varying associations between county social vulnerability and influenza vaccination rate among Medicare recipients. County-level 2018 data (N=3,105) from the Centers for Disease Control and Prevention's Social Vulnerability Index were merged with the percentage of Medicare recipients vaccinated against influenza. Multilevel linear regression and geographically weighted regression generated global and local estimates, adjusted for potential confounders. Analyses were conducted in November 2020-April 2021. A 10-percentile point increase in the overall Social Vulnerability Index was associated with an 0.87-point decrease in percentage vaccinated (p<0.001) with substantial variation by Social Vulnerability Index theme and geography. A 10-percentile point increase in socioeconomic vulnerability was associated with a 1.6-point decrease in vaccination (p<0.001) with stronger associations in higher Social Vulnerability Index quartiles and in parts of the Midwest, South, and coastal Northeast. Other Social Vulnerability Index themes had smaller associations with mixed directions: household composition and disability estimates were negative, whereas estimates for minority status and language and housing and transportation were positive. Medicare recipients in socioeconomically vulnerable counties have low influenza vaccination rates, particularly in select regions of the country. Best practices to improve vaccine access and uptake should be targeted and should explicitly consider local socioeconomic vulnerability.

Parental Vaccine Hesitancy and Risk of Pediatric Influenza Under-Vaccination in a Safety-Net Health Care System.

To measure the risk of influenza under-vaccination in children of vaccine-hesitant parents, referent to children of nonhesitant parents, in a sample of disadvantaged families in one influenza season. A prospective observational cohort study of English- and Spanish-speaking parents of 2-year-olds presenting at random for well, sick, or specialty visit care from August 1, 2019 to February 28, 2020. Parents answered demographic questions and the Parent Attitudes about Childhood Vaccines survey. We followed children until season's end, extracting vaccination data on April 30, 2020. We dichotomized vaccination status as unvaccinated or partially/fully vaccinated, analyzing data with multivariable Poisson regression; in secondary analyses, we conducted adjusted time-to-event analyses. Overall, 263 parents consented (response rate: 90%); our final sample included 255 dyads. Thirty-three (13%) parents were vaccine hesitant. In adjusted analyses, children of hesitant parents (n=33) had a 195% increased risk (adjusted Risk Ratio 2.95; 95% confidence interval 1.91, 4.56) of being unvaccinated at season's end, referent to children of nonhesitant parents (n=222). In time-to-event analyses, children of vaccine-hesitant parents were also more likely to be unvaccinated before influenza activity peaked (P=.02). Parental vaccine hesitancy tripled the risk of pediatric influenza nonvaccination in a sample of poor and minority families during the 2019 to 2020 influenza season. As parental vaccine hesitancy appears to exacerbate pediatric influenza vaccination disparities, future work should explore parental hesitancy with poor and minority stakeholders and tailor evidence-based interventions to benefit children from these communities who receive care at all practice sites.

Influenza Vaccination in Health Centers During the Coronavirus Disease 2019 Pandemic-United States, 7-27 November 2020.

Influenza vaccination is the most effective way to prevent influenza and influenza-associated complications including those leading to hospitalization. Resources otherwise used for influenza could support caring for patients with coronavirus disease 2019 (COVID-19). The Health Resources and Services Administration (HRSA) Health Center Program serves 30 million people annually by providing comprehensive primary healthcare, including influenza vaccination, to demographically diverse and historically underserved communities. Because racial and ethnic minority groups have been disproportionately affected by COVID-19, the objective of this analysis was to assess disparities in influenza vaccination at HRSA-funded health centers during the COVID-19 pandemic. The Centers for Disease Control and Prevention and HRSA analyzed cross-sectional data on influenza vaccinations from a weekly, voluntary health center COVID-19 survey after addition of an influenza-related question covering 7-11 November 2020. During the 3-week period, 1126 of 1385 health centers (81%) responded to the survey. Most of the 811 738 influenza vaccinations took place in urban areas and in the Western US region. There were disproportionately more health center influenza vaccinations among racial and ethnic minorities in comparison with county demographics, except among non-Hispanic blacks and American Indian/Alaska Natives. HRSA-funded health centers were able to quickly vaccinate large numbers of mostly racial or ethnic minority populations, disproportionately more than county demographics. However, additional efforts might be needed to reach specific racial populations and persons in rural areas. Success in influenza vaccination efforts can support success in severe acute respiratory syndrome coronavirus 2 vaccination efforts.

Decomposing Racial and Ethnic Disparities in Nursing Home Influenza Vaccination

ObjectivesQuantify how observable characteristics contribute to influenza vaccination disparities among White, Black, and Hispanic nursing home (NH) residents. DesignRetrospective cohort. Setting and ParticipantsShort- and long-stay U.S. NH residents aged ≥65 years. MethodsWe linked Minimum Data Set (MDS) and Medicare data to LTCFocUS and other facility data. We included residents with 6-month continuous enrollment in Medicare and an MDS assessment between October 1, 2013, and March 31, 2014. Residents were classified as short-stay (<100 days in NH) or long-stay (≥100 days in NH). We fit multivariable logistic regression models to assess the relationships between 27 resident and NH-level characteristics and receipt of influenza vaccination. Using nonlinear Oaxaca-Blinder decomposition, we decomposed the disparity in influenza vaccination between White versus Black and White versus Hispanic NH residents. Analyses were repeated separately for short- and long-stay residents. ResultsOur study included 630,373 short-stay and 1,029,593 long-stay residents. Proportions vaccinated against influenza included 67.2% of White, 55.1% of Black, and 54.5% of Hispanic individuals among short-stay residents and 84.2%, 76.7%, and 80.8%, respectively among long-stay residents. Across 4 comparisons, the crude disparity in influenza vaccination ranged from 3.4 to 12.7 percentage points. By equalizing 27 prespecified characteristics, these disparities could be reduced 37.7% to 59.2%. Living in a predominantly White facility and proxies for NH quality were important contributors across all analyses. Characteristics unmeasured in our data (eg, NH staff attitudes and beliefs) may have also contributed significantly to the disparity. Conclusions and ImplicationsThe racial/ethnic disparity in influenza vaccination was most dramatic among short-stay residents. Intervening on factors associated with NH quality would likely reduce these disparities; however, future qualitative research is essential to explore potential contributors that were unmeasured in our data and to understand the degree to which these factors contribute to the overall disparity in influenza vaccination.

Disparities in influenza vaccination: Arab Americans in California

BackgroundInfluenza vaccination among minoritized groups remains below federal benchmarks in the United States (US). We used data from the 2004–2016 California Health Interview Surveys (CHIS) to characterize influenza vaccination patterns among Arab Americans in California.MethodsInfluenza vaccination was self-reported by Arab American adults (N = 1163) and non-Hispanic Whites (NHW, N = 166,955). Differences in influenza vaccination prevalence and odds were compared using chi-squared tests and survey-weighted logistic regression, respectively.ResultsAcross all years, 30.3% of Arab Americans self-reported receiving an influenza vaccine (vs. 40.5% for NHW, p < 0.05). After sequential adjustment by sociodemographic, health behavior, and acculturation variables no differences in odds of self-reported influenza vaccination were observed between Arab Americans and NHW (odds ratio: 1.02, 95% confidence interval: 0.76–1.38). Male and unemployed Arab Americans had higher odds of reporting influenza vaccination than female and employed Arab Americans.ConclusionsFuture work should consider specific barriers to influenza vaccination in Arab American communities.

Racial disparities in influenza vaccination

Racial disparities in influenza vaccination

Racial and geographic disparities in influenza vaccination in the U.S. among individuals with atherosclerotic cardiovascular disease: Renewed importance in the setting of COVID-19

IntroductionThe importance of receiving an annual influenza vaccine among patients with atherosclerotic cardiovascular disease (ASCVD) is well established. With the rapid community spread and the possibility of another wave of COVID-19 infections in the fall, receiving an influenza vaccine is of particular importance to mitigate the risk associated with overlapping influenza and COVID-19 infections. MethodsWe utilized cross-sectional data from the 2016 to 2019 Behavioral Risk Factor Surveillance System (BRFSS), a nationally representative U.S. telephone-based survey of adults 18 years or older. Race/ethnicity was our exposure of interest. We assessed the relative difference in influenza vaccination by race/ethnicity for each U.S. state in the overall U.S. population and among those with ASCVD as prevalence of receipt of influenza vaccination among Blacks or Hispanics minus prevalence among Whites divided by prevalence among Whites. We used multivariable-adjusted logistic regression models to evaluate the association between socioeconomic risk factors and receipt of influenza vaccination. ResultsThe study population consisted of 1,747,397 participants of whom 21% were older than 65 years, 51% women, 63% White, 12% Black, 17% Hispanic, and 9% with history of ASCVD. The receipt of influenza vaccine was 38% in the overall population and 51% among those with self-reported ASCVD, which translates to approximately to 97 million and 12 million US adults, respectively. The receipt of influenza vaccine among individuals with ASCVD was 54% for Whites, 45% for Blacks, and 42% for Hispanics (p<0.001). In the overall U.S. population, the median (interquartile range) relative difference for influenza vaccination between Blacks and Whites was 17% (-27%, -9%) and –22% (-29%, -9%) between Hispanics and Whites across all U.S. states. Among individuals with and without ASCVD, age older than 65 years, greater than college education, higher income, and having a primary care physician were significantly associated with higher odds of receipt of influenza vaccination, while being employed, lack of healthcare coverage, Black race, and delay in healthcare access were significantly inversely associated with having received an influenza vaccine ConclusionsOnly 50% patients with ASCVD receive influenza vaccines. The receipt of influenza vaccination among individuals with ASCVD is lower among Blacks and Hispanics compared to Whites with significant state-level variation. There are important socioeconomic determinants that are associated with receipt of the influenza vaccine.

Influenza Vaccination among Underserved African-American Older Adults.

Background Racial disparities in influenza vaccination among underserved minority older adults are a public health problem. Understanding the factors that impact influenza vaccination behaviors among underserved older African-Americans could lead to more effective communication and delivery strategies. Aims We aimed to investigate rate and factors associated with seasonal influenza vaccination among underserved African-American older adults. We were particularly interested in the roles of demographic factors, socioeconomic status, and continuity and patient satisfaction with medical care, as well as physical and mental health status. Methods This community-based cross-sectional study recruited 620 African-American older adults residing in South Los Angeles, one of the most under-resources areas within Los Angeles County, with a population of over one million. Bivariate and multiple regression analyses were performed to document independent correlates of influenza vaccination. Results One out of three underserved African-American older adults aged 65 years and older residing in South Los Angeles had never been vaccinated against the influenza. Only 49% of participants reported being vaccinated within the 12 months prior to the interview. One out of five participants admitted that their health care provider recommended influenza vaccination. However, only 45% followed their provider's recommendations. Multivariate logistic regression shows that old-old (≥75 years), participants who lived alone, those with a lower level of continuity of care and satisfaction with the accessibility, availability, and quality of care, and participants with a higher number of depression symptoms were less likely to be vaccinated. As expected, participants who indicated that their physician had advised them to obtain a flu vaccination were more likely to be vaccinated. Our data shows that only gender was associated with self-report of being advised to have a flu shot. Discussion. One of the most striking aspects of this study is that no association between influenza vaccination and being diagnosed with chronic obstructive pulmonary disease or other major chronic condition was detected. Our study confirmed that both continuity of care and satisfaction with access, availability, and quality of medical care are strongly associated with current influenza vaccinations. We documented that participants with a higher number of depression symptoms were less likely to be vaccinated. Conclusion These findings highlight the role that culturally acceptable and accessible usual source of care van play as a gatekeeper to facilitate and implement flu vaccination among underserved minority older adults. Consistent disparities in influenza vaccine uptake among underserved African-American older adults, coupled with a disproportionate burden of chronic diseases, places them at high risk for undesired outcomes associated with influenza. As depression is more chronic/disabling and is less likely to be treated in African-Americans, there is a need to screen and treat depression as a strategy to enhance preventive care management such as vaccination of underserved African-American older adults. Quantification of associations between lower vaccine uptake and both depression symptoms as well as living alone should enable health professionals target underserved African-American older adults who are isolated and suffer from depression to reduce vaccine-related inequalities.

Prevalence and Disparities in Influenza Vaccination Among Patients With COPD in the United States

COPD is currently the fourth leading cause of death in the United States and worldwide.1 Influenza-related infections are among the main causes of COPD exacerbations, hospitalizations, and mortality, all of which have been proven to be diminished with influenza vaccination.2,3

Prevalence of and Sociodemographic Disparities in Influenza Vaccination Among Adults With Diabetes in the United States.

National estimates describing the overall prevalence of and disparities in influenza vaccination among patients with diabetes mellitus (DM) in United States are not well described. Therefore, we analyzed the prevalence of influenza vaccination among adults with DM, overall and by sociodemographic characteristics, using the Medical Expenditure Panel Survey database from 2008 to 2016. Associations between sociodemographic factors and lack of vaccination were examined using adjusted logistic regression. Among adults with DM, 36% lacked influenza vaccination. Independent predictors of lacking influenza vaccination included age 18 to 39 years (odds ratio [OR] 2.54; 95% confidence interval [CI], 2.14-3.00), Black race/ethnicity (OR 1.29; 95% CI, 1.14-1.46), uninsured status (OR 1.88; 95% CI, 1.59-2.21), and no usual source of care (OR 1.61; 95% CI, 1.39-1.85). Nearly 64% individuals with ≥ 4 higher-risk sociodemographic characteristics lacked influenza vaccination (OR 3.50; 95% CI 2.79-4.39). One-third of adults with DM in the United States lack influenza vaccination, with younger age, Black race, and lower socioeconomic status serving as strong predictors. These findings highlight the continued need for focused public health interventions to increase vaccine coverage and utilization among disadvantaged communities.

Disparities in Influenza Vaccination—Opportunity to Extend Cardiovascular Prevention to Millions of Hearts

Disparities in Influenza Vaccination—Opportunity to Extend Cardiovascular Prevention to Millions of Hearts

Addressing Influenza Vaccination Disparities During the COVID-19 Pandemic

Addressing Influenza Vaccination Disparities During the COVID-19 Pandemic

Home remedy use and influenza vaccination among African American and white adults: An exploratory study

Racial disparities in influenza vaccination persist between African American and White adults. It is critical to explore the reasons behind this disparity, which may be linked to the use of “folk” or home remedies for illness prevention and treatment. For this study, The GfK Group was contracted to conduct a nationally-representative survey (n = 819 African American and 838 White respondents). Respondents were asked about behaviors, attitudes, and risk perception related to the influenza vaccine, as well as frequency of home remedy use. Results were analyzed using adjusted logistic regression with 95% confidence intervals. In comparison to those who never use home remedies, those who use home remedies often or almost always were less likely to get vaccinated for influenza (respectively, OR = 0.70, CI 0.49, 0.99; OR = 0.27, CI 0.15, 0.49), less likely to be in favor of the vaccine (OR = 0.47, CI 0.33, 0.67; OR = 0.19, CI 0.10, 0.34), less likely to trust the vaccine (OR = 0.42, CI 0.29, 0.61; OR = 0.34, CI 0.20, 0.61), and more likely to perceive higher risk of vaccine side effects (OR = 1.79, CI 1.19, 2.68; OR = 4.00, CI 2.38, 6.73). These associations did not vary by race. Home remedy users may hold negative views toward the influenza vaccine, such that a combination of little trust in the vaccine process, and overestimation of risk associated with the vaccine itself, may contribute to vaccine refusal. Health care professionals can use these findings to tailor advice toward individuals with a preference for home remedy use to allay fears and correct misconceptions surrounding influenza and its vaccine.

Factors contributing to racial disparities in influenza vaccinations.

BackgroundRacial/ethnic disparities in rates of influenza vaccinations in the US remain an issue even among those with access, no out-of-pocket costs, and after adjusting for confounders. We used an approach called the Oaxaca-Blinder (OB) decomposition method to ascertain the contribution of covariates individually and in aggregate to the racial disparity in influenza vaccination.MethodsWe included members > = 18 years of age as of 05/01/2014 with continuous enrollment through 04/30/2015. Influenza vaccination was defined by diagnosis, procedure, or medication codes, or documentation in the immunization table. Characteristics were reported by race. Logistic regression models estimated the odds of vaccination associated with: (1) race; and (2) covariates stratified by race. The Oaxaca-Blinder (OB) method calculated the contribution of covariates to the difference or disparity in vaccination between Blacks and Whites.ResultsWe found that among adults, 44% were vaccinated; 55% were Black; and 45% were White. Black members have 42% lower odds of vaccination than White members. The contribution of the differences in the average value of the study covariates between Black and White members (the OB covariate effect) accounted for 29% of the racial disparity. The contributions to the total White-Black disparity in vaccination included: age (16%), neighborhood median income (11%), and registration on the online patient portal (13%). The contribution of the differences in how the covariates impact vaccination (OB coefficient effect) accounted for 71% of the disparity in vaccination between Blacks and Whites.ConclusionIn conclusion, equalizing average covariate values in Blacks and Whites could reduce the racial disparity in influenza vaccination by 29%. For health system vaccine campaigns, improving registration on the patient portal may be a target component of an effective system-level strategy to reduce racial disparities in vaccination. Additional information on patient-centered factors could further improve the value of the OB approach.