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Benedict Kpozehouen E, Raina Macintyre C, Tan TC. Coverage of influenza, pneumococcal and zoster vaccination and determinants of influenza and pneumococcal vaccination among adults with cardiovascular diseases in community. Vaccine 2024:S0264-410X(24)00619-4. [PMID: 38789372 DOI: 10.1016/j.vaccine.2024.05.051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 05/05/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024]
Abstract
BACKGROUND Cardiovascular disease (CVD) is the leading cause of death and illness globally. Influenza, pneumococcal disease and herpes zoster infection may trigger acute cardiovascular events or cause complications among cardiac patients. Vaccination is recommended for adults with CVD. There is a gap in research evidence around determinants and uptake of influenza, pneumococcal and zoster vaccines in adults with CVD. OBJECTIVE The aim of this study is to examine the rate of the uptake of influenza, zoster and pneumococcal vaccines, factors associated with the uptake of influenza vaccine, and the perceptions of influenza and pneumococcal vaccination among people with CVD in the community. METHOD Cross-sectional survey data was analysed from three separate surveys carried out in Australia between October 2019 and September 2020 of 972 adults with CVD. We used descriptive statistics to describe data. Thematic analysis examined the reasons for taking influenza vaccine. Multivariable analysis was used to identify independent predictors of the influenza vaccine uptake and perceptions associated with the uptake of influenza and pneumococcal vaccines. RESULTS Out of 972 participants, a total of 661 (68 %) people said they had received influenza vaccine in the last 12 months; 361 (37 %) had ever received pneumococcal vaccine; 196 (20 %) had ever received zoster vaccine. Among 661 participants who said they received influenza vaccine within the 12 months prior to the study, 543 (82 %) participants received it from doctors or general practitioners (GPs) offices. Age 65 and older, being born in Australia, being employed or retired and having comorbidity were positive predictors of influenza vaccination. Doctors' recommendations to take the vaccine and awareness of free vaccines positively predicted influenza and pneumococcal vaccine uptake. CONCLUSION The uptake of recommended pneumococcal and zoster vaccines is low in people with CVD. Doctors' recommendations, targeted health promotion programs in general practice, and easy access to vaccination may optimise vaccination uptake in patients with CVD.
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Affiliation(s)
| | - C Raina Macintyre
- Biosecurity Program, The Kirby Institute, Faculty Medicine and Health, University of New South Wales, Australia
| | - Timothy C Tan
- Department of Cardiology, Blacktown Hospital, Sydney, NSW, Australia; Western Sydney University, Australia; School of Medical Sciences, Faculty of Medicine, University of New South Wales, NSW, Australia
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Hashemi L, Ghasemi M, Bartley A, Fenaughty J, Pirouzi M, Grant C. Migration and infant immunization timeliness in New Zealand: Evidence from the Growing Up in New Zealand study. Vaccine 2024; 42:2229-2238. [PMID: 38472065 DOI: 10.1016/j.vaccine.2024.02.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 02/16/2024] [Accepted: 02/17/2024] [Indexed: 03/14/2024]
Abstract
BACKGROUND Migration has been recognized as an important determinant of child health outcomes including childhood vaccination status. This paper aims to examine the association between parental migration status and a less studied aspect of child immunization outcomes, namely timeliness, within the context of New Zealand (NZ), a country characterized by a substantial proportion of its resident population born overseas. Additionally, the study explored the impact of residential duration on children's immunization timeliness. METHODS The data was taken from a large, representative population-based cohort study in NZ (Growing Up in NZ study). A total of 6156 children and their parents, comprising 2241 foreign-born and 3915 NZ-born mothers and a sub-group of their partners were included in the analysis. The survey data was linked with the National Immunization Register dataset. Timely immunization was defined as receiving two vaccines at each scheduled vaccination point (at six-week, three-month, and five-month, totaling six doses of vaccines) within 30 days of their due date. We examined the associations between parental migration status, maternal residential duration, and child immunization timeliness while controlling for socio-economic variations. The results were presented as adjusted odds ratios (AORs) with 95 % confidence intervals (CIs). RESULTS The findings revealed that after adjustment for socioeconomic differences, children of foreign-born mothers exhibited higher odds of receiving all six studied vaccine doses on time compared to children of native-born mothers (AOR 1.51, 95 %CI:1.27-1.78). Similarly, having a foreign-born father was also significantly associated with timely completion of all six vaccine doses. Children of recent immigrants who had resided in the country for less than five years demonstrated higher odds of timely vaccination of all six vaccine doses compared to children of settled immigrants who had lived in the country for five or more years (AOR 1.65, 95 %CI: 1.25-2.19). CONCLUSION This study revealed a significant pattern in NZ where immigrants exhibited higher rates of timely immunization for their children compared to native-born parents. However, the findings also underscore the importance of providing support to settled immigrants, as their children experienced declines in timely vaccination rates compared to children of recent immigrants and even those born to NZ-born parents.
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Affiliation(s)
- Ladan Hashemi
- Social and Community Health, School of Population Health, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.
| | - Maryam Ghasemi
- Faculty of Counselling, Human Services and Social Work, University of Auckland, Auckland, New Zealand.
| | - Allen Bartley
- Faculty of Counselling, Human Services and Social Work, University of Auckland, Auckland, New Zealand.
| | - John Fenaughty
- Faculty of Counselling, Human Services and Social Work, University of Auckland, Auckland, New Zealand.
| | - Maryam Pirouzi
- Health Systems, School of Population Health, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.
| | - Cameron Grant
- Paediatrics, Child and Youth Health, School of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.
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Does the Integration of Migrants in the Host Society Raise COVID-19 Vaccine Acceptance? Evidence From a Nationwide Survey in Japan. J Immigr Minor Health 2023; 25:255-265. [PMID: 36129643 PMCID: PMC9490729 DOI: 10.1007/s10903-022-01402-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2022] [Indexed: 11/30/2022]
Abstract
Research indicates that integration contributes to maintaining health among migrants, yet little is known about the association between integration and vaccination acceptance. This study aimed to explore COVID-19 vaccine intention and acceptance, and the association between integration and vaccine hesitancy among migrants in Japan. We conducted an internet survey among migrants in Japan from October 5 to October 14, 2021. Among 1,455 participants, 11.6% reported hesitancy toward COVID-19 vaccination. We found that the overall integration and social integration were associated with the vaccination intention. Some commonly identified barriers (e.g., financial difficulties, language) were not related to COVID-19 vaccination acceptance among migrants in Japan. Highly integrated migrants were less likely to report vaccine hesitancy against COVID-19. To promote COVID-19 acceptance among migrants, customized intervention policies should focus on the migrants with a lower level of integration, especially those with little social connection with the locals.
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Benedict Kpozehouen E, Arrudsivah B, Raina Macintyre C. Knowledge, attitudes and practices of health care workers in a cardiology department on influenza vaccination. Vaccine 2023; 41:2349-2356. [PMID: 36801083 DOI: 10.1016/j.vaccine.2023.01.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 01/03/2023] [Accepted: 01/31/2023] [Indexed: 02/18/2023]
Abstract
BACKGROUND Evidence has accrued that influenza vaccination may be effective in preventing myocardial infarction (MI). However, vaccination rates in both adults and health care workers (HCW) are low, and hospitalisation is often a missed opportunity for vaccination. We hypothesised that knowledge, attitude and practices of health care workers regarding vaccination impacts vaccine uptake in hospitals. The cardiac ward admits high-risk patients, many of whom are indicated for influenza vaccine, especially those caring for patients with acute MI. AIM To understand the knowledge, attitudes, and practices of HCW in cardiology ward within a tertiary institution, on influenza vaccination. METHODS We used focus group discussions with HCW caring for AMI patients in an acute cardiology ward, to explore the knowledge, attitudes, and practices of HCW regarding influenza vaccination for patients under their care. Discussions were recorded, transcribed, and thematically analysed using NVivo software. In addition, participants completed a survey on their knowledge and attitudes towards the uptake of influenza vaccination. RESULTS A lack of awareness regarding the associations between influenza, vaccination and cardiovascular health was identified amongst HCW. Participants did not routinely discuss the benefits of influenza vaccination or recommend influenza vaccinations to patients under their care; this may be due to a combination of a lack of awareness, not seeing it as part of their job and workload issues. We also highlighted difficulties in access to vaccination, and concerns of adverse reactions to the vaccine. CONCLUSION There is limited awareness among HCW of the role of influenza on cardiovascular health and the benefits of influenza vaccine in the prevention of cardiovascular events. Improved vaccination of at-risk patients in hospital may need active engagement of HCW. Improving the health literacy of HCW regarding the benefits of vaccination as a preventative strategy may result in better health care outcomes for cardiac patients.
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Affiliation(s)
| | | | - C Raina Macintyre
- Biosecurity Program, The Kirby Institute for Infection and Immunity, UNSW Sydney, Australia
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Liu G, Liu Z, Zhao H, Sun Y, Shen P, Lin H, Zhan S. The effectiveness of influenza vaccine among elderly Chinese: A regression discontinuity design based on Yinzhou regional health information platform. Hum Vaccin Immunother 2022; 18:2115751. [PMID: 36302096 PMCID: PMC9746462 DOI: 10.1080/21645515.2022.2115751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
In China, a free influenza vaccination policy is being implemented among individuals aged 70 years and over in Zhejiang province during the COVID-19 pandemic. The objective was to assess the effectiveness of influenza vaccine in reducing hospitalization and mortality in the elderly. We used data from the Regional Health Information Platform in Yinzhou located in Zhejiang province and applied a regression discontinuity design to estimate the intention-to-treat effect on admission and mortality rates by month of age in the population who was near the age of 70 years threshold. At age 70 years, the influenza vaccination rate increased by 29.1% (95% CI, 28.2% to 29.9%) compared to those under 70 in the study population. When turning age 70 years, the potential effectiveness of receiving influenza vaccine was 8.2% (95% CI, -36.8% to 51.3%) for total hospitalization and the evaluation of vaccine effectiveness was 13.1% (95% CI, -34.2 to 61.8) for the all-cause mortality. An increase in the influenza vaccination rate was associated with a weak decline in most outcomes, but no significance was found for all outcomes. Influenza vaccination had a limited effect on hospital admission and mortality for the free influenza vaccination program that can be related to the low vaccination rate among the Chinese elderly. Supplementation strategies and future studies may be needed to expand immunization coverage and validate this finding, and further provide a reference for other cities to promote the free influenza vaccination policy in China, especially under circumstances of the COVID-19 pandemic.
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Affiliation(s)
- Guangxu Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Zhike Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Houyu Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Yexiang Sun
- Big Data Center, Yinzhou District Center for Disease Control and Prevention, Ningbo, China
| | - Peng Shen
- Big Data Center, Yinzhou District Center for Disease Control and Prevention, Ningbo, China
| | - Hongbo Lin
- Big Data Center, Yinzhou District Center for Disease Control and Prevention, Ningbo, China
| | - Siyan Zhan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China,Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing, China,Center for Intelligent Public Health, Institute for Artificial Intelligence, Peking University, Beijing, China,CONTACT Siyan Zhan Department of Epidemiology and Biostatistics, School of Public Health, Peking University, No.38 Xueyuan Road, Haidian District, Beijing100191, China
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MacDonald SE, Paudel YR, Du C. COVID-19 vaccine coverage among immigrants and refugees in Alberta: A population-based cross-sectional study. J Glob Health 2022; 12:05053. [PMID: 36472928 PMCID: PMC9725104 DOI: 10.7189/jogh.12.05053] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Studies have shown that immigrants have lower vaccination rates than the Canadian-born population. We sought to assess COVID-19 vaccine coverage and factors associated with uptake among foreign-born immigrants relative to the non-immigrant population in Alberta, Canada. Methods In this cross-sectional study, we analysed population-based linked administrative health data from Alberta to examine vaccine coverage for 3 931 698 Albertans, of which 731 217 were immigrants. We calculated COVID-19 vaccination coverage as the proportion of eligible Albertans with a record of receiving at least one dose of a COVID-19 vaccine as of November 29, 2021. We used multivariable logistic regression to examine the association of vaccine coverage with migration status (immigrants: four categories based on time since migration and non-immigrants) adjusting for socio-demographic variables. Results Overall, COVID-19 vaccination coverage was 78.2% (95% confidence interval (CI) = 78.1%-78.3%) among immigrants and 76.0% (95% CI = 75.9%-76.0%) among non-immigrants. Coverage among immigrants differed by continent of origin, with North America, Oceania, and Europe having the lowest coverage. Although vaccine coverage was relatively uniform across neighbourhood income quintiles for immigrants, immigrants living in rural areas had lower vaccine coverage compared to non-immigrants living in rural areas. Multivariable logistic regression analysis showed a significant interaction between age category and migration status. While immigrants below 50 years of age generally had significantly higher vaccine coverage compared to non-immigrants, there was some variation based on time since migration. Immigrants above 50 years of age showed significantly lower coverage compared to non-immigrants of the same age. Conclusions Public health interventions should focus on older immigrants, immigrants living in rural areas, and immigrants from specific continental backgrounds in order to improve COVID-19 vaccination coverage.
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Affiliation(s)
- Shannon E MacDonald
- School of Public Health, University of Alberta, Edmonton, Alberta, Canada,Faculty of Nursing, University of Alberta, Edmonton, Alberta, Canada
| | - Yuba Raj Paudel
- School of Public Health, University of Alberta, Edmonton, Alberta, Canada
| | - Crystal Du
- School of Public Health, University of Alberta, Edmonton, Alberta, Canada
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Influenza Vaccination among Multiple Sclerosis Patients during the COVID-19 Pandemic. Vaccines (Basel) 2022; 10:vaccines10101766. [PMID: 36298631 PMCID: PMC9612003 DOI: 10.3390/vaccines10101766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/16/2022] [Accepted: 10/18/2022] [Indexed: 11/16/2022] Open
Abstract
In the context of the COVID-19 pandemic, the co-circulation of influenza and SARS-CoV-2 viruses may have severe complications for vulnerable populations. For this reason, the World Health Organization pointed to the 2020-2021 anti-influenza campaign as being of special relevance. Our aim was to assess the 2020-2021 influenza vaccination coverage, and its associated factors, among patients in a Spanish multiple sclerosis (MS) unit. A cross-sectional study was conducted. People attending the MS unit of the Clinical Hospital of Zaragoza during 2020 were included. Variables were obtained by reviewing records. Associations with 2020-2021 influenza vaccination were analyzed using bivariate analysis and a multiple logistic regression model. A total of 302 patients were studied; 62.6% were women, whose mean age (standard deviation) was 47.3 (11.5) years. The 2020-2021 influenza vaccination coverage was 55.3% (59.8% in women and 47.8% in men). A total of 89.7% had at least one other indication for vaccination (e.g., immunosuppressive treatment in 225 patients). The variables associated with getting vaccinated were being female (adjusted odds ratio (95% confidence interval) (aOR (95%CI) = 2.12 (1.12-3.99)), having received the 2019-2020 influenza vaccine (aOR (95%CI) = 31.82 (14.71-68.86)) and being born in Spain (aOR (95%CI) = 12.91 (1.07-156.28)). Coverage is moderate compared to other countries. It is necessary to develop strategies to improve it, especially in men and those born outside Spain.
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Hou Z, Guo J, Lai X, Zhang H, Wang J, Hu S, Du F, Francis MR, Fang H. Influenza vaccination hesitancy and its determinants among elderly in China: A national cross-sectional study. Vaccine 2022; 40:4806-4815. [PMID: 35788295 DOI: 10.1016/j.vaccine.2022.06.063] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 06/10/2022] [Accepted: 06/15/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND The Chinese elderly face a significant threat from seasonal influenza, owing to the consistently low vaccination coverage. This study investigated the prevalence and determinants of influenza vaccination hesitancy among the Chinese elderly. METHODS In 2019, 3849 elderly individuals from 10 provinces in China were recruited in a cross-sectional survey. Multinomial logistic regression was applied to investigate the determinants of influenza vaccination hesitancy. RESULTS Among the elderly respondents, 37.18% expressed some degree of hesitancy towards influenza vaccination: 19.28% were hesitant, and 17.90% refused influenza vaccination, including 19.28% acceptors with doubts and 17.90% refusers. Only 39.10% of the respondents considered themselves as the priority group for influenza vaccination, and 13.93% reported receiving a recommendation for vaccination from healthcare workers. Respondents with higher education levels and from urban areas had significantly higher odds of vaccine hesitancy than their counterparts. Confidence in the safety of vaccines was negatively associated with vaccine hesitancy, but confidence in vaccine efficacy had no such association. Respondents who perceived themselves as highly susceptible to influenza (AOR = 0.85; 95 %CI = 0.77-0.93) and those aware of the elderly as a priority group for influenza vaccination (AOR = 0.51; 95 %CI = 0.41-0.64) had a significantly lower odds of being refusers. CONCLUSION This study found a high prevalence of hesitancy towards influenza vaccination among the Chinese elderly, especially well-educated and urban-dwelling respondents. The government should address vaccine hesitancy through culturally appropriate communication, subsidies for vaccination, and actively promoting vaccines through primary care professionals.
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Affiliation(s)
- Zhiyuan Hou
- School of Public Health, NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China.
| | - Jia Guo
- School of Public Health, Peking University, Beijing 100083, China; China Center for Health Development Studies, Peking University, Beijing 100083, China.
| | - Xiaozhen Lai
- School of Public Health, Peking University, Beijing 100083, China; China Center for Health Development Studies, Peking University, Beijing 100083, China.
| | - Haijun Zhang
- School of Public Health, Peking University, Beijing 100083, China; China Center for Health Development Studies, Peking University, Beijing 100083, China.
| | - Jiahao Wang
- School of Public Health, Peking University, Beijing 100083, China; China Center for Health Development Studies, Peking University, Beijing 100083, China.
| | - Simeng Hu
- School of Public Health, NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China.
| | - Fanxing Du
- School of Public Health, NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China.
| | - Mark R Francis
- Health Sciences Unit, Faculty of Social Sciences, Tampere University, Finland.
| | - Hai Fang
- China Center for Health Development Studies, Peking University, Beijing 100083, China; Peking University Health Science Center-Chinese Center for Disease Control and Prevention Joint Center for Vaccine Economics, Beijing 100083, China; Key Laboratory of Reproductive Health National Health Commission of the People's Republic of China, Beijing 100083, China.
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Abdi I, Gidding H, Leong RN, Moore HC, Seale H, Menzies R. Vaccine coverage in children born to migrant mothers in Australia: A population-based cohort study. Vaccine 2021; 39:984-993. [PMID: 33431224 DOI: 10.1016/j.vaccine.2020.12.058] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/17/2020] [Accepted: 12/16/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Overall, infant immunisation coverage is currently >90% in Australia, but there are pockets of under-immunised children including children from migrant backgrounds. This study aimed to examine whether on-time vaccination coverage of diphtheria-tetanus-pertussis dose 3 (DTP3) for children born in Australia differed by mother's region of birth and if so, what factors were associated with these differences. METHODS We conducted a population-based cohort study using linked data on perinatal, immunisation and birth records for 2 million children born in Western Australia and New South Wales between 1996 and 2012. We assessed on-time coverage of DTP3 (vaccination from 2 weeks prior to, and up until 30 days after, the due date) in children with mothers born overseas. Logistic regression models were developed to determine factors associated with on-time coverage for each maternal region of birth and all regions combined, adjusting for a range of demographic factors. Adjusted estimates of coverage were calculated for the different regions of birth. RESULTS On-time DTP3 coverage was 76.2% in children of Australian born mothers, lower in children of mothers from Oceania (66.7%) and North America (68%), and higher in children born to mothers from South-East Asia (79.9%) and Southern Asia (79.3%). While most variables were consistently associated with lower coverage in all regions of birth, higher socioeconomic status and jurisdiction of birth showed varied results. Adjusted estimates of DTP3 coverage increased in children born to mothers from Australia (78.3%), Oceania (70.5%), Northern Africa (81.5%) and the Middle East (79.6%). DTP3 coverage decreased in children born to mothers from Europe and former USSR (74.6%), North-east Asia (75.2%), Southern Asia (76.7%), North America (65.5) and South/Central America and the Caribbean (73.2%). CONCLUSIONS On-time vaccination rates differed by mother's region of birth. More research is needed to determine the main reasons for these remaining differences to improve vaccine uptake and also help guide policy and practice.
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Affiliation(s)
- Ikram Abdi
- School of Population Health, University of New South Wales, Sydney, Australia.
| | - Heather Gidding
- School of Population Health, University of New South Wales, Sydney, Australia; National Centre for Immunisation Research and Surveillance, Westmead, NSW, Australia; Women and Babies Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Australia; The University of Sydney Northern Clinical School, The University of Sydney, Sydney, NSW, Australia
| | - Robert Neil Leong
- School of Population Health, University of New South Wales, Sydney, Australia
| | - Hannah C Moore
- Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Perth, Western Australia, Australia
| | - Holly Seale
- School of Population Health, University of New South Wales, Sydney, Australia
| | - Robert Menzies
- Kirby Institute, University of New South Wales, Kensington, NSW, Australia; Sanofi Pasteur, Macquarie Park, NSW, Australia
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Jiang X, Shang X, Lin J, Zhao Y, Wang W, Qiu Y. Impacts of free vaccination policy and associated factors on influenza vaccination behavior of the elderly in China: A quasi-experimental study. Vaccine 2020; 39:846-852. [PMID: 33390294 DOI: 10.1016/j.vaccine.2020.12.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/09/2020] [Accepted: 12/10/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Chinese elders are under high threats of seasonal influenza, while showing low influenza vaccination coverage comparing with other countries. The study explored the impacts of free vaccination policy and associated factors on influenza vaccination behavior of the elderly in Zhejiang Province, China, offering a guidance of interventions for protecting elders from seasonal influenza. METHODS 1210 elders ≥60 years were conveniently recruited between July and September of 2019. 607 of them were sampled from 6 counties with free vaccination policy, while the other 603 elderly people were sampled from another 6 comparable counties without the policy. A self-reported questionnaire, involving socio-democratic information, physical status and behavior, influenza knowledge, vaccination awareness, relatives of healthcare workers, and vaccination behavior, was completed by elders under supports of research assistants. Chi-square tests and logistic regression analyses were performed to explore the impacts of research factors. RESULTS A total of 464 (38.3%, 95%CI: 36.9-39.7%) elders claimed that they got vaccinated, and the vaccination coverages of elders in the counties with and without free vaccination policy were 68.4% (95%CI: 64.7-72.1%) and 8.1% (95%CI: 5.9-10.3%), respectively. Protective and risk factors of vaccination behavior were identified, including free vaccination policy (ORstep = 27.29, 95%CI: 18.69-39.82), positive vaccination awareness (ORstep = 7.93, 95%CI: 5.50-11.43), catching cold frequently (ORstep = 2.00, 95%CI: 1.32-3.05), and having relatives of healthcare workers (ORstep = 0.56, 95%CI: 0.34-0.93). Age, education level, monthly income, family structure, physical status, and influenza knowledge were significantly associated with vaccination behavior. Having relatives of healthcare workers may indirectly affect vaccination behavior through vaccination awareness. CONCLUSIONS Free vaccination policy plays the most fundamental role of improving vaccination coverage among studied factors. To protect elders from seasonal influenza, effective measurements, such as issuing free vaccination policy, enriching influenza knowledge, and guiding positive vaccination awareness for both elders and healthcare professionals are recommended to be included into influenza immunization strategies.
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Affiliation(s)
- Xuewen Jiang
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Binjiang District, Hangzhou, Zhejiang Province, China
| | - Xiaopeng Shang
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Binjiang District, Hangzhou, Zhejiang Province, China
| | - Junfen Lin
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Binjiang District, Hangzhou, Zhejiang Province, China
| | - Yanrong Zhao
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Binjiang District, Hangzhou, Zhejiang Province, China
| | - Wei Wang
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Binjiang District, Hangzhou, Zhejiang Province, China
| | - Yinwei Qiu
- Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Binjiang District, Hangzhou, Zhejiang Province, China.
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Meng Z, Zhang J, Shi J, Zhao W, Huang X, Cheng L, Yang X. Immunogenicity of influenza vaccine in elderly people: a systematic review and meta-analysis of randomized controlled trials, and its association with real-world effectiveness. Hum Vaccin Immunother 2020; 16:2680-2689. [PMID: 32347787 PMCID: PMC7746244 DOI: 10.1080/21645515.2020.1747375] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Background: Older people (≥60 years old) are particularly vulnerable to influenza virus infection, and vaccine is effective in reducing the disease burden in this population. However, it remains obscure whether their antibody response is lower than those of younger adults (18–60 years old). Thus, this meta-analysis was performed to compare the immunogenicity of influenza vaccines and understand their association with real-world vaccine effectiveness (VE) between these two age groups. Methods: A systematic literature search was conducted to identify relevant studies from Jan 01, 2008 to Nov 10, 2018. These are randomized controlled trials that included older adult samples, which assessed the immunogenicity of inactivated quadrivalent influenza vaccines produced in embryonated eggs. We excluded the studies focused only in children or adults. The outcomes were seroprotecton rate (SPR) and seroconversion rate (SCR). Results: Six studies were eventually included in the present meta-analysis (7,976 participants). For the SPR, the pooled risk ratio (RR) was 0.92 (95% CI: 0.90–0.94, I2 = 66%, P < .0001) for A/H1N1 and 0.94 (95% CI: 0.90–0.98, I2 = 91%, P = .002) for B/Victoria, and the antibody responses of A/H3N2 and B/Yamagata were similar in the two age groups. For the SCR, the pooled RR was 0.85 (95% CI: 0.76–0.94, I2 = 93%, P = .003), 0.77 (95% CI: 0.66–0.91, I2 = 94%, P = .002), and 0.83 (95% CI: 0.71–0.96, I2 = 94%, P = .02) for A/H1N1, B/Victoria and B/Yamagata, respectively, and the antibody responses of A/H3N2 were similar in the two groups. Some variations were found in the antibody responses across virus types and subtypes after influenza vaccination. Conclusion: The SPR and SCR of older adults were lower than those in younger adults for A/H1N1 and B/Victoria, while the two age groups had similar antibody responses for A/H3N2. The antibody responses to vaccines were not significantly associated with real-world VE, indicating that antibody response might not fully reflect the vaccine effectiveness of A/H3N2.
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Affiliation(s)
- Ziyan Meng
- National Institute of Engineering Technology Research in Combination Vaccines , Wuhan, China.,Wuhan Institute of Biological Products 430207 , Wuhan, China
| | - Jiayou Zhang
- National Institute of Engineering Technology Research in Combination Vaccines , Wuhan, China.,Wuhan Institute of Biological Products 430207 , Wuhan, China
| | - Jinrong Shi
- National Institute of Engineering Technology Research in Combination Vaccines , Wuhan, China.,Wuhan Institute of Biological Products 430207 , Wuhan, China
| | - Wei Zhao
- National Institute of Engineering Technology Research in Combination Vaccines , Wuhan, China.,Wuhan Institute of Biological Products 430207 , Wuhan, China
| | - Xiaoyuan Huang
- National Institute of Engineering Technology Research in Combination Vaccines , Wuhan, China.,Wuhan Institute of Biological Products 430207 , Wuhan, China
| | - Li Cheng
- Center for Evaluation and Inspection of Hubei Food and Drug Administration , Wuhan, China
| | - Xiaoming Yang
- National Institute of Engineering Technology Research in Combination Vaccines , Wuhan, China.,China National Biotech Group Company Limited , Beijing, China
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12
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Kong KL, Chu S, Giles ML. Factors influencing the uptake of influenza vaccine vary among different groups in the hard‐to‐reach population. Aust N Z J Public Health 2020; 44:163-168. [DOI: 10.1111/1753-6405.12964] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 08/01/2019] [Accepted: 11/01/2019] [Indexed: 11/26/2022] Open
Affiliation(s)
- Khai Lin Kong
- Department of Obstetrics and GynaecologyMonash University Melbourne Victoria
| | - Sandy Chu
- Faculty of Medicine, Nursing and Health SciencesMonash University Melbourne Victoria
| | - Michelle L. Giles
- Department of Obstetrics and GynaecologyMonash University Melbourne Victoria
- Monash Immunisation, Monash Health Melbourne Victoria
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13
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Dyda A, Karki S, Kong M, Gidding HF, Kaldor JM, McIntyre P, Banks E, MacIntyre CR, Liu B. Influenza vaccination coverage in a population-based cohort of Australian-born Aboriginal and non-Indigenous older adults. Commun Dis Intell (2018) 2019. [DOI: 10.33321/cdi.2019.43.30] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Background: There is limited information on vaccination coverage and characteristics associated with vaccine uptake in Aboriginal and/or Torres Strait Islander adults. We aimed to provide more current estimates of influenza vaccination coverage in Aboriginal adults.
Methods: Self-reported vaccination status (n=559 Aboriginal and/or Torres Strait Islander participants, n=80,655 non-Indigenous participants) from the 45 and Up Study, a large cohort of adults aged 45 years or older, was used to compare influenza vaccination coverage in Aboriginal and/or Torres Strait Islander adults with coverage in non-Indigenous adults.
Results: Of Aboriginal and non-Indigenous respondents aged 49 to <65 years, age-standardised influenza coverage was respectively 45.2% (95% CI 39.5–50.9%) and 38.5%, (37.9–39.0%), p-value for heterogeneity=0.02. Coverage for Aboriginal and non-Indigenous respondents aged ≥65 years was respectively 67.3% (59.9–74.7%) and 72.6% (72.2–73.0%), p-heterogeneity=0.16. Among Aboriginal adults, coverage was higher in obese than in healthy weight participants (adjusted odds ratio (aOR)=2.38, 95%CI 1.44–3.94); in those aged <65 years with a medical risk factor than in those without medical risk factors (aOR=2.13, 1.37–3.30); and in those who rated their health as fair/poor compared to those who rated it excellent (aOR=2.57, 1.26–5.20). Similar associations were found among non-Indigenous adults.
Conclusions: In this sample of adults ≥65 years, self-reported influenza vaccine coverage was not significantly different between Aboriginal and non-Indigenous adults whereas in those <65 years, coverage was higher among Aboriginal adults. Overall, coverage in the whole cohort was suboptimal. If these findings are replicated in other samples and in the Australian Immunisation Register, it suggests that measures to improve uptake, such as communication about the importance of influenza vaccine and more effective reminder systems, are needed among adults.
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Affiliation(s)
- Amalie Dyda
- School of Public Health and Community Medicine, UNSW, Sydney, NSW, Australia; Australian Institute of Health Innovation, Macquarie University, Sydney, NSW, Australia
| | - Surendra Karki
- School of Public Health and Community Medicine, UNSW, Sydney, NSW, Australia
| | - Marlene Kong
- The Kirby Institute, UNSW, Sydney, NSW, Australia
| | - Heather F Gidding
- School of Public Health and Community Medicine, UNSW, Sydney, NSW, Australia; The National Centre for Immunisation Research and Surveillance of Vaccine Preventable Diseases, Children’s Hospital at Westmead and University of Sydney, Sydney, NSW, Australia
| | | | - Peter McIntyre
- The National Centre for Immunisation Research and Surveillance of Vaccine Preventable Diseases, Children’s Hospital at Westmead and University of Sydney, Sydney, NSW, Australia
| | - Emily Banks
- National Centre for Epidemiology and Population Health, Research School of Population Health, The Australian National University, Acton, Australian Capital Territory, Australia
| | - C Raina MacIntyre
- The Kirby Institute, UNSW, Sydney, NSW, Australia; College of Public Service and Community Solutions, Arizona State University, Tempe, AZ, 85287, United States
| | - Bette Liu
- School of Public Health and Community Medicine, UNSW, Sydney, NSW, Australia
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14
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Vaccine-preventable diseases and immunisation coverage among migrants and non-migrants worldwide: A scoping review of published literature, 2006 to 2016. Vaccine 2019; 37:2661-2669. [DOI: 10.1016/j.vaccine.2019.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 03/30/2019] [Accepted: 04/01/2019] [Indexed: 02/07/2023]
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15
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Andrew MK, Bowles SK, Pawelec G, Haynes L, Kuchel GA, McNeil SA, McElhaney JE. Influenza Vaccination in Older Adults: Recent Innovations and Practical Applications. Drugs Aging 2019; 36:29-37. [PMID: 30411283 DOI: 10.1007/s40266-018-0597-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Influenza can lead to serious illness, particularly for older adults. In addition to short-term morbidity and mortality during the acute infection, recovery can be prolonged and often incomplete. This may lead to persistent declines in health and function, including catastrophic disability, which has dramatic implications for the well-being and support needs of older adults and their caregivers. All of this means that prevention of infection and effective treatment when illness has occurred are of paramount importance. In this narrative review, we discuss the effectiveness of influenza vaccines for the prevention of influenza illness and serious outcomes in older adults. We review evidence of vaccine effectiveness for older adults in comparison with younger age groups, and also highlight the importance of frailty as a determinant of vaccine effectiveness. We then turn our attention to the question of why older and frailer individuals have poorer vaccine responses, and consider changes in immune function and inflammatory responses. This sets the stage for a discussion of newer influenza vaccine products that have been developed with the aim of enhancing vaccine effectiveness in older adults. We review the available evidence on vaccine efficacy, effectiveness and cost benefits, consider the potential place of these innovations in clinical geriatric practice, and discuss international advisory committee recommendations on influenza vaccination in older adults. Finally, we highlight the importance of influenza prevention to support healthy aging, along with the need to improve vaccine coverage rates using available vaccine products, and to spur development of better influenza vaccines for older adults in the near future.
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Affiliation(s)
- Melissa K Andrew
- Division of Geriatric Medicine, Department of Medicine (Geriatrics), Dalhousie University, 5955 Veterans' Memorial Lane, Halifax, NS, Canada. .,Canadian Center for Vaccinology, Halifax, NS, Canada.
| | - Susan K Bowles
- Division of Geriatric Medicine, Department of Medicine (Geriatrics), Dalhousie University, 5955 Veterans' Memorial Lane, Halifax, NS, Canada.,Canadian Center for Vaccinology, Halifax, NS, Canada.,Department of Pharmacy, Nova Scotia Health Authority, Central Zone, Halifax, NS, Canada
| | - Graham Pawelec
- Second Department of Internal Medicine, University of Tübingen, Tübingen, Germany.,Health Sciences North Research Institute, Sudbury, ON, Canada
| | - Laura Haynes
- Center on Aging, University of Connecticut School of Medicine, Farmington, CT, USA
| | - George A Kuchel
- Center on Aging, University of Connecticut School of Medicine, Farmington, CT, USA
| | - Shelly A McNeil
- Canadian Center for Vaccinology, Halifax, NS, Canada.,Department of Medicine (Infectious Diseases), Dalhousie University, Halifax, NS, Canada
| | - Janet E McElhaney
- Health Sciences North Research Institute, Northern Ontario School of Medicine, Sudbury, ON, Canada
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16
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Heywood AE, López-Vélez R. Reducing infectious disease inequities among migrants. J Travel Med 2019; 26:5198602. [PMID: 30476162 DOI: 10.1093/jtm/tay131] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 11/13/2018] [Accepted: 11/20/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND migration has reached unprecedented levels, with 3.6% of the world's population living outside their country of birth. Migrants comprise a substantial proportion of high-income country populations, are at increased risk of a range of infectious diseases, compared to native-born populations and may experience worse health outcomes due to barriers accessing timely diagnoses and treatment. Poor access to essential healthcare services can be attributed to several factors, including language and cultural barriers and lack of specific inclusive health policies. METHODS This review draws on evidence from the immigrant health and travel medicine literature, with a focus on infectious disease risks. It presents strategies to reduce barriers to healthcare access through health promotion and screening programs both at the community and clinic level and the delivery of linguistically and culturally competent care. The Methods: Salud Entre Culturas (SEC) 'Health Between Cultures' project from the Tropical Medicine Unit at the Hospital Ramon y Cajal in Madrid is described as an effective model of care. RESULTS For those providing healthcare to migrant populations, the use of community-consulted approaches are considered best practice in the development of health education, health promotion and the delivery of targeted health services. At the clinic-level, strategies optimizing care for migrants include the use of bilingual healthcare professionals or community-based healthcare workers, cultural competence training of all clinic staff, the appropriate use of trained interpreters and the use of culturally appropriate health promotion materials. CONCLUSIONS Multifaceted strategies are needed to improve access, community knowledge, community engagement and healthcare provider training to provide appropriate care to migrant populations to reduce infectious disease disparities.
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Affiliation(s)
- Anita E Heywood
- Level 3, Samuels Building, School of Public Health and Community Medicine, UNSW Sydney, NSW, Australia
| | - Rogelio López-Vélez
- National Referral Unit for Tropical Diseases, Department of Infectious Diseases, Ramón y Cajal University Hospital, Madrid, Spain
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17
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Giles ML, Hickman J, Lingam V, Buttery J. Results from a mobile outreach influenza vaccination program for vulnerable and high‐risk populations in a high‐income setting: lessons learned. Aust N Z J Public Health 2018; 42:447-450. [DOI: 10.1111/1753-6405.12810] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 03/01/2018] [Accepted: 05/01/2018] [Indexed: 11/28/2022] Open
Affiliation(s)
- Michelle L. Giles
- Monash Immunisation, Monash Health Victoria
- Department of Obstetrics and GynaecologyMonash University Victoria
| | | | | | - Jim Buttery
- Monash Immunisation, Monash Health Victoria
- Department of PaediatricsMonash University Victoria
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18
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Smetana J, Chlibek R, Shaw J, Splino M, Prymula R. Influenza vaccination in the elderly. Hum Vaccin Immunother 2018; 14:540-549. [PMID: 28708957 PMCID: PMC5861798 DOI: 10.1080/21645515.2017.1343226] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 05/25/2017] [Accepted: 06/13/2017] [Indexed: 02/08/2023] Open
Abstract
Seasonal influenza is a prevalent and serious annual illness resulting in widespread morbidity and economic disruption throughout the population; the elderly and immunocompromised are particularly vulnerable to serious sequelae and mortality. The changing demographics worldwide to an aging society have important implications for public health policy and pharmaceutical innovations. For instance, primary prevention via immunization is effective in reducing the burden of influenza illness among the elderly. However, the elderly may be insufficiently protected by vaccination due to the immunosenescence which accompanies aging. In addition, vaccine hesitancy among the younger populations increases the likelihood of circulating infectious diseases, and thus concomitant exposure. While it is clear that the development of more immunogenic vaccines is an imperative and worthy endeavor, clinical trials continue to demonstrate that the current influenza vaccine formulation remains highly effective in reducing morbidity and mortality when well matched to circulating strains.
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Affiliation(s)
- Jan Smetana
- University of Defence, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
| | - Roman Chlibek
- University of Defence, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
| | - Jana Shaw
- University of Hradec Kralove, Faculty of Science, Hradec Kralove, Czech Republic
- SUNY Upstate Medical University, Department of Pediatrics, Division of Pediatric Infectious Diseases, Syracuse, NY, USA
| | - Miroslav Splino
- University of Defence, Faculty of Military Health Sciences, Hradec Kralove, Czech Republic
| | - Roman Prymula
- University of Hradec Kralove, Faculty of Science, Hradec Kralove, Czech Republic
- Charles University, Faculty of Medicine in Hradec Kralove, Department of Social Medicine, Hradec Kralove, Czech Republic
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