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Gómez-Acebo I, Barquín-Ruiz A, Llorente S, Alonso-Molero J, Llorca J, Cabero-Perez MJ, Dierssen-Sotos T. The impact of the COVID-19 pandemic on childhood vaccination rates and the role of sociodemographic factors: A cohort study. Vaccine 2024; 42:126207. [PMID: 39121696 DOI: 10.1016/j.vaccine.2024.126207] [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: 04/26/2024] [Revised: 08/01/2024] [Accepted: 08/03/2024] [Indexed: 08/12/2024]
Abstract
OBJECTIVE This study examines the impact of the COVID-19 pandemic on both routine and non-routine vaccinations in infants during their initial 18 months of life, concurrently exploring the complex influence of sociodemographic factors. METHODS A cohort study was conducted, involving 2007 children in two distinct periods: pre-pandemic (January-June 2018) and pandemic (March 2020-May 2021). Participants were classified into two cohorts: 962 children in the 2018 group and 1045 children in the 2020-21 group. Utilizing unconditional logistic regression, the association between vaccination (complete or non-routine) and socioeconomic factors was examined, with adjustments for potential confounding variables such as age, breastfeeding, gestational age, and twins. RESULTS The study's analysis reveals that in the post-pandemic period, mothers were three times more likely to opt for non-routine vaccines (95% CI 2.25-4.23). However, no significant alterations were observed in routine vaccination rates. Protective factors for complete vaccination included having an employed mother, higher education, and a medium-to-high income. Conversely, a higher income was associated with a reduced likelihood of complete vaccination (OR 0.34, 95% CI 0.20-0.59). CONCLUSION Contrary to initial expectations, this study concludes that the COVID-19 pandemic did not have a substantial impact on childhood complete vaccination rates. Nevertheless, a noticeable increase in the choice of non-routine vaccination was observed. Sociodemographic factors, such as maternal education, income, and employment status, emerged as key influencers, particularly in the context of deciding on non-routine vaccinations.
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Affiliation(s)
- Inés Gómez-Acebo
- Preventive Medicine Group, University of Cantabria, Santander, Spain, IDIVAL-Valdecilla Health Research Institute, Santander, Spain, CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain.
| | - Ana Barquín-Ruiz
- Preventive Medicine Group, University of Cantabria, Santander, Spain
| | - Sandra Llorente
- Department of Pediatrics, Marqués de Valdecilla University Hospital, Santander, Spain. IDIVAL-Valdecilla Health Research Institute, Santander, Spain
| | - Jéssica Alonso-Molero
- Preventive Medicine Group, University of Cantabria, Santander, Spain, IDIVAL-Valdecilla Health Research Institute, Santander, Spain, CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Javier Llorca
- Preventive Medicine Group, University of Cantabria, Santander, Spain; Retired Professor, University of Cantabria, Santander, Spain
| | - María J Cabero-Perez
- Department of Pediatrics, Marqués de Valdecilla University Hospital, Santander, Spain. IDIVAL-Valdecilla Health Research Institute, Santander, Spain
| | - Trinidad Dierssen-Sotos
- Preventive Medicine Group, University of Cantabria, Santander, Spain, IDIVAL-Valdecilla Health Research Institute, Santander, Spain, CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain
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Chang J, Zhu S, Zhang Y, Carvalho N, Xu S, Lu Y, Liu X, Fang Y, Meng Q. Determinants of parental demand of human papillomavirus vaccination for adolescent daughters in China: Contingent valuation survey. Int J Health Plann Manage 2024. [PMID: 39014911 DOI: 10.1002/hpm.3818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 03/23/2024] [Accepted: 06/21/2024] [Indexed: 07/18/2024] Open
Abstract
BACKGROUND Several types of human papillomavirus (HPV) vaccines have been approved for use in adolescent girls in China. These vaccines are regulated as non-National Immunisation Program vaccines and are optional and generally fully self-paid by vaccinees. OBJECTIVE To assess parents' demand for HPV vaccination by eliciting their willingness-to-pay for their adolescent daughters to be vaccinated against HPV and to examine the determinants of demand for HPV vaccination in China. METHODS A contingent valuation survey was conducted across three cities in Shandong Province in eastern China. We selected 11 junior middle schools with different socioeconomic features and randomly selected 6 classes in each school, and questionnaires were distributed to all girls aged 12-16 in the 66 classes for their parents to complete. A payment card approach was used to elicit parental willingness-to-pay for HPV vaccination for their daughters. We also collected a wide array of socioeconomic and psychological variables and interval regressions were applied to examine the determinants of parental willingness-to-pay. RESULTS A total of 1074 eligible parents who completed valid questions were included in analyses. Over 85% of parents believed HPV vaccines were, in general, necessary and beneficiary. However, only around 10% believed that their daughters would be infected by HPV. About 8% of parents would not accept HPV vaccine even if the vaccine were free mainly due to concerns about the potential side effects and vaccine safety and quality issues, and 27.37% would only accept the vaccine if it were free. The median willingness-to-pay was 300 CNY (42 USD). Several factors were positively correlated with higher willingness-to-pay: income, urban residence (relative to rural residence), mothers (relative to fathers), parents' beliefs about vaccine benefits, whether they should make decisions for their daughters, and whether their daughters would be susceptible to HPV. Though education-level was not significantly correlated with willingness-to-pay in the main regressions, a subgroup analysis revealed interesting dynamics in the relation between education and willingness-to-pay across different income-levels. CONCLUSIONS There is a large gap between parents' willingness-to-pay and the market price of HPV vaccine for girls in China. Parents generally believed the HPV vaccines were beneficial and necessary but when asked for their daughters, most parents did not believe their daughters would be infected by HPV despite the high prevalence in China. Future focus should be on ensuring the provision of accurate health information about HPV prevalence, vaccine quality, and safety to promote vaccine uptake, and promotional efforts tailored to different income groups might yield better effects. Government involvement in negotiating more widely acceptable and affordable prices or subsidising may be necessary for protecting high-risk population groups.
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Affiliation(s)
- Jie Chang
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Center for Drug Safety and Policy Research, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Shaanxi Center for Health Reform and Development Research, Xi'an, Shaanxi, China
| | - Shan Zhu
- Xi'an Municipal Health Commission, Xi'an, China
| | - Yuting Zhang
- Faculty of Business and Economics, Melbourne Institute: Applied Economic and Social Research, University of Melbourne, Melbourne, Victoria, Australia
| | - Natalie Carvalho
- Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Sen Xu
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Center for Drug Safety and Policy Research, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Shaanxi Center for Health Reform and Development Research, Xi'an, Shaanxi, China
| | - Yunshu Lu
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Center for Drug Safety and Policy Research, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Shaanxi Center for Health Reform and Development Research, Xi'an, Shaanxi, China
| | - Xin Liu
- Department of Epidemiology and Health Statistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China
| | - Yu Fang
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmacy, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Center for Drug Safety and Policy Research, Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Shaanxi Center for Health Reform and Development Research, Xi'an, Shaanxi, China
| | - Qingyue Meng
- China Center for Health Development Studies, Peking University, Beijing, China
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Shen H, Xu Y, Zhan Y, Liu Y, Zhang X, Li M, Ji C. Current vaccination status and safety of children with peripheral neuroblastoma in the real-world. Front Immunol 2024; 14:1278258. [PMID: 38259480 PMCID: PMC10800462 DOI: 10.3389/fimmu.2023.1278258] [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: 08/16/2023] [Accepted: 12/12/2023] [Indexed: 01/24/2024] Open
Abstract
Background peripheral neuroblastic tumors (pNT) have high incidence and mortality, and infants are prone to various infectious diseases. The purpose of this study is to understand the immunization status of children with pNT in the real-world and the incidence of adverse reactions after vaccination, and to evaluate the feasibility of vaccination and the influencing factors of vaccination. Methods Children with pNT treated in the Children's Hospital Affiliated to Zhejiang University from January 1, 2011 to December 1, 2021 were included. By referring to medical records, the vaccination history of the national immunization program (NIP) vaccines and the occurrence of adverse events following immunization(AEFI), current status and safety of immunization in children with pNT in the real-world were analyzed. Results Among 784 children with pNT, 394 were able to obtain the history of vaccination. The overall vaccination rate of NIP vaccines was 71.49% before chemotherapy and 37.67% after chemotherapy, and the recovery time of vaccination after treatment was 16.00 (6.00,24.00) months. Age, time of tumor diagnosis and disease classification were significantly correlated with vaccination. AEFI reported an incidence of 0.23‰. Conclusion The vaccination rate of children with pNT is generally low, especially the vaccination rate after chemotherapy. The vaccination safety is good, children should be encouraged to immunize.
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Affiliation(s)
- Heping Shen
- Department of Pediatric Hematology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yuyang Xu
- Department of Expanded Program on Immunization, Hangzhou Center for Disease Control and Prevention, Hangzhou, Zhejiang, China
| | - Yuxuan Zhan
- Public Health, Zhejiang University, Hangzhou, China
| | - Yan Liu
- Department of Expanded Program on Immunization, Hangzhou Center for Disease Control and Prevention, Hangzhou, Zhejiang, China
| | - Xuechao Zhang
- Department of Expanded Program on Immunization, Hangzhou Center for Disease Control and Prevention, Hangzhou, Zhejiang, China
| | - Mingyan Li
- Department of Pediatric Health Care, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Chai Ji
- Department of Pediatric Health Care, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Zhou Y, Li D, Cao Y, Lai F, Wang Y, Long Q, Zhang Z, An C, Xu X. Immunization coverage, knowledge, satisfaction, and associated factors of non-National Immunization Program vaccines among migrant and left-behind families in China: evidence from Zhejiang and Henan provinces. Infect Dis Poverty 2023; 12:93. [PMID: 37833775 PMCID: PMC10571434 DOI: 10.1186/s40249-023-01145-5] [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] [Received: 05/07/2023] [Accepted: 09/29/2023] [Indexed: 10/15/2023] Open
Abstract
BACKGROUND Migrant and left-behind families are vulnerable in health services utilization, but little is known about their disparities in immunization of non-National Immunization Program (NIP) vaccines. This study aims to evaluate the immunization coverage, knowledge, satisfaction, and associated factors of non-NIP vaccines among local and migrant families in the urban areas and non-left-behind and left-behind families in the rural areas of China. METHODS A cross-sectional survey was conducted in urban areas of Zhejiang and rural areas of Henan in China. A total of 1648 caregivers of children aged 1-6 years were interviewed face-to-face by a pre-designed online questionnaire, and their families were grouped into four types: local urban, migrant, non-left-behind, and left-behind. Non-NIP vaccines included Hemophilus influenza b (Hib) vaccine, varicella vaccine, rotavirus vaccine, enterovirus 71 vaccine (EV71) and 13-valent pneumonia vaccine (PCV13). Log-binomial regression models were used to calculate prevalence ratios (PRs) and 95% confidence intervals (CIs) for the difference on immunization coverage of children, and knowledge and satisfaction of caregivers among families. The network models were conducted to explore the interplay of immunization coverage, knowledge, and satisfaction. Logistic regression models with odds ratios (ORs) and 95% CIs were used to estimate the associated factors of non-NIP vaccination. RESULTS The immunization coverage of all non-NIP vaccines and knowledge of all items of local urban families was the highest, followed by migrant, non-left-behind and left-behind families. Compared with local urban children, the PRs (95% CIs) for getting all vaccinated were 0.65 (0.52-0.81), 0.29 (0.22-0.37) and 0.14 (0.09-0.21) among migrant children, non-left-behind children and left-behind children, respectively. The coverage-knowledge-satisfaction network model showed the core node was the satisfaction of vaccination schedule. Non-NIP vaccination was associated with characteristics of both children and caregivers, including age of children (> 2 years-OR: 1.69, 95% CI: 1.07-2.68 for local urban children; 2.67, 1.39-5.13 for migrant children; 3.09, 1.23-7.76 for non-left-behind children); and below caregivers' characteristics: family role (parents: 0.37, 0.14-0.99 for non-left-behind children), age (≤ 35 years: 7.27, 1.39-37.94 for non-left-behind children), sex (female: 0.49, 0.30-0.81 for local urban children; 0.31, 0.15-0.62 for non-left-behind children), physical health (more than average: 1.58, 1.07-2.35 for local urban children) and non-NIP vaccines knowledge (good: 0.45, 0.30-0.68 for local urban children; 7.54, 2.64-21.50 for left-behind children). CONCLUSIONS There were immunization disparities in non-NIP vaccines among migrant and left-behind families compared with their local counterparts. Non-NIP vaccination promotion strategies, including education on caregivers, and optimization of the immunization information system, should be delivered particularly among left-behind and migrant families.
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Affiliation(s)
- Yaguan Zhou
- School of Public Health, The Second Affiliated Hospital, Zhejiang University School of Medicine, Yuhangtang Road 866, Hangzhou, 310058, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Duanhui Li
- School of Public Health, The Second Affiliated Hospital, Zhejiang University School of Medicine, Yuhangtang Road 866, Hangzhou, 310058, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Yuan Cao
- School of Public Health, The Second Affiliated Hospital, Zhejiang University School of Medicine, Yuhangtang Road 866, Hangzhou, 310058, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
- Songxian Center for Disease Control and Prevention, Luoyang, Henan, China
| | - Fenhua Lai
- Department of Immunoprophylaxis, Xiaoshan Center for Disease Control and Prevention, Hangzhou, Zhejiang, China
| | - Yu Wang
- Global Health Research Center, Division of Social Sciences, Duke Kunshan University, Kunshan, Jiangsu, China
| | - Qian Long
- Global Health Research Center, Duke Kunshan University, Kunshan, Jiangsu, China
| | - Zifan Zhang
- School of Public Health, The Second Affiliated Hospital, Zhejiang University School of Medicine, Yuhangtang Road 866, Hangzhou, 310058, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Chuanbo An
- School of Public Health, The Second Affiliated Hospital, Zhejiang University School of Medicine, Yuhangtang Road 866, Hangzhou, 310058, Zhejiang, China
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Xiaolin Xu
- School of Public Health, The Second Affiliated Hospital, Zhejiang University School of Medicine, Yuhangtang Road 866, Hangzhou, 310058, Zhejiang, China.
- The Key Laboratory of Intelligent Preventive Medicine of Zhejiang Province, Hangzhou, Zhejiang, China.
- School of Public Health, Faculty of Medicine, The University of Queensland, Brisbane, Australia.
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Lyu Y, Lai X, Ma Y, Fang H. Factors associated with recommendation behaviors of four non-National Immunization Program vaccines: a cross-sectional survey among public health workers in China. Infect Dis Poverty 2023; 12:91. [PMID: 37805654 PMCID: PMC10559509 DOI: 10.1186/s40249-023-01142-8] [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] [Received: 05/01/2023] [Accepted: 09/25/2023] [Indexed: 10/09/2023] Open
Abstract
BACKGROUND Immunization is a crucial preventive measure to safeguard children under five years old against a range of diseases. In China, the coverage rate of non-National Immunization Program (non-NIP) vaccines can be improved by leveraging the recommendation from public health workers. Hence, understanding the influencing factors of recommendation behaviors assume paramount importance. This study aims to investigate influencing factors of public health workers' recommendation behaviors towards non-NIP vaccines, with a particular emphasis on financial incentives. METHODS A cross-sectional survey was conducted using a multi-stage sampling method in 2019 from August to October. 627 public health workers were recruited from 148 community healthcare centers in ten provincial-level administrative divisions in China. An anonymous questionnaire was used to collect demographic information, attitudes towards vaccination, and recommendation behaviors towards non-NIP vaccines, including Haemophilus influenzae type b (Hib) vaccine, pneumococcal conjugate vaccine, varicella vaccine, and rotavirus vaccine. Descriptive analysis and multivariate logistic regression analysis were adopted in this study. RESULTS Of the 610 public health workers with complete survey data, 53.8%, 57.4%, 84.1%, and 54.1% often recommended Hib vaccine, pneumococcal pneumonia vaccine (PCV), varicella vaccine, and rotavirus vaccine, respectively. Logistic regression revealed that gender (Hib vaccine: OR = 0.4, 95% CI: 0.2-0.8; PCV: OR = 0.4, 95% CI: 0.2-0.8; rotavirus vaccine: OR = 0.3, 95% CI: 0.2-0.6), financial incentives for non-NIP vaccination (Hib vaccine: OR = 1.9, 95% CI: 1.1-3.6; PCV: OR = 2.1, 95% CI: 1.1-3.9; rotavirus vaccine: OR = 2.0, 95% CI: 1.1-3.8) and perception of vaccine safety (Hib vaccine: OR = 2.7, 95% CI: 1.1-7.0; PCV: OR = 3.2, 95% CI: 1.2-8.0; rotavirus vaccine: OR = 3.0, 95% CI: 1.2-7.7) were associated with public health workers' recommendation towards Hib vaccine, PCV and rotavirus vaccine. CONCLUSIONS The findings highlighted public health workers' recommendation behaviors of non-NIP vaccines in China and revealed strong association between vaccine recommendation and financial incentives. This highlights the importance of financial incentives in public health workers' recommendation toward non-NIP vaccines in China. Proper incentives are recommended for public health workers to encourage effective health promotion in immunization practices.
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Affiliation(s)
- Yun Lyu
- Department of Health Policy and Management, School of Public Health, Peking University, Beijing, China
| | - Xiaozhen Lai
- Department of Health Policy and Management, School of Public Health, Peking University, Beijing, China
- Health Economics Research Centre, Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | - Yidi Ma
- Department of Health Policy and Management, School of Public Health, Peking University, Beijing, China
| | - Hai Fang
- China Center for Health Development Studies, Peking University, Beijing, China.
- Peking University Health Science Center-Chinese Center for Disease Control and Prevention Joint Research Center for Vaccine Economics, Peking University, Beijing, China.
- Institute for Global Health and Development, Peking University, Beijing, China.
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Ji M, Huang Z, Ren J, Wagner AL. Vaccine hesitancy and receipt of mandatory and optional pediatric vaccines in Shanghai, China. Hum Vaccin Immunother 2022; 18:2043025. [PMID: 35321621 PMCID: PMC9196833 DOI: 10.1080/21645515.2022.2043025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/11/2022] [Indexed: 11/04/2022] Open
Abstract
Given increased global concern about vaccine hesitancy, this study estimates coverage of mandatory vs non-mandatory vaccines in children, and assesses whether vaccine hesitancy among young parents relates to their child's eventual vaccination status in Shanghai, China. In a cohort study within Shanghai, China, we ascertained vaccine hesitancy among parents of young infants, and later abstracted their child's electronic immunization records. We measure full coverage of vaccines on the mandatory, and publicly funded Expanded Program on Immunization (EPI). Non-EPI vaccines included pneumococcal conjugate vaccine, Haemophilus influenzae type b vaccine, and rotavirus vaccine. Vaccine hesitancy was linked to vaccine uptake through mixed effects logistic regression models. Among 972 children, full coverage of all EPI vaccines by 15 months was 95%, compared to dose 1 coverage of pneumococcal conjugate vaccine at 13%, Haemophilus influenzae type b vaccine at 68%, and rotavirus vaccine at 52%. Vaccine hesitancy was not significantly linked with full coverage of all EPI vaccines (OR: 1.55, 95% CI: .89, 2.72), but coverage in the vaccine hesitant was lower for pneumococcal conjugate vaccine dose 1 (OR: .70, 95% CI: .53, .91), and rotavirus vaccine dose 1 (OR: .69, 95% CI: .56, .86). Disparities by education level were not significant for EPI vaccines, but were for dose 1 of pneumococcal conjugate vaccine rotavirus vaccine. Overall, vaccine hesitancy was related to lower uptake of non-EPI, but not EPI vaccines. Shanghai has a robust system for insurance equitable access to EPI vaccines, but if vaccine hesitancy grows, it could reduce coverage of non-EPI vaccines.
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Affiliation(s)
- Mengdi Ji
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Zhuoying Huang
- Department of Immunization Program, Shanghai Municipal Centers for Disease Control & Prevention, Shanghai, China
| | - Jia Ren
- Department of Immunization Program, Shanghai Municipal Centers for Disease Control & Prevention, Shanghai, China
| | - Abram L. Wagner
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA
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Wang X, Feng Y, Zhang Q, Ye L, Cao M, Liu P, Liu S, Li S, Zhang J. Parental preference for Haemophilus influenzae type b vaccination in Zhejiang Province, China: A discrete choice experiment. Front Public Health 2022; 10:967693. [PMID: 36466507 PMCID: PMC9710483 DOI: 10.3389/fpubh.2022.967693] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 10/11/2022] [Indexed: 11/07/2022] Open
Abstract
Background China is the only country in the world that has not included the Haemophilus influenzae type b (Hib) vaccine in its National Immunization Program, making it more difficult to eliminate Hib-related diseases through Hib vaccination. It is necessary to study parental preferences for Hib vaccination to optimize vaccine promotion strategies in China. Objective This study aimed to investigate Chinese parental preference for five attributes of Hib vaccination, i.e., the place of origin, effectiveness, adverse event, doctors' recommendation, and the price of full vaccination when making a decision to vaccinate their children under 2 years old. Methods A cross-sectional survey was conducted in two cities in Zhejiang Province from November to December in 2020 using a discrete choice experiment (DCE). A mixed logit model was used to estimate participating parents' preference for Hib vaccination attributes included in the DCE. Subgroup analysis and probability analysis were also conducted to capture the heterogeneity and trade-off of parental preference for Hib vaccination. Results Data from 6,168 observations were included in the analyses. Parents of children are, on average, more likely to voice a positive preference for Hib vaccination. Such attributes of Hib vaccination as effectiveness and doctor's recommendation have a significant positive influence on parents' preference for Hib vaccination, while imported vaccines, adverse events, and the price of full vaccination have a significant negative influence on parents' preference. Parents with different demographic characteristics also existed heterogeneities in preference for Hib vaccination. Parents will make a trade-off on price if the Hib vaccine has a good performance on effectiveness and safety. Conclusion The study found that, regardless of the place of origin of the Hib vaccine, parents with children under 2 years old prefer to compromise on price if the vaccine has a better effectiveness and safety profile. A proactive recommendation from doctors would strengthen their willingness for Hib vaccination. These findings help aid the development of communication strategies with parents for Hib vaccination in China.
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Affiliation(s)
- Xianglin Wang
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China,School of Health Policy and Management, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Yi Feng
- Business School, Sichuan University, Chengdu, China
| | - Qian Zhang
- Department of National Immunization Program, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Lihong Ye
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Man Cao
- School of Health Policy and Management, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Ping Liu
- Centre for Health Management and Policy Research, School of Public Health, Shandong University, Jinan, China
| | - Shimeng Liu
- School of Public Health, Fudan University, Shanghai, China,National Health Commission (NHC) Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China
| | - Shunping Li
- School of Health Care Management, Shandong University, Jinan, China,National Health Commission (NHC) Key Laboratory of Health, Economics and Policy Research (Shandong University), Jinan, China
| | - Juan Zhang
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China,*Correspondence: Juan Zhang
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Wu L, Huang Z, Guo X, Liu J, Sun X. Measuring parents' acceptance of non-national immunization program vaccines for children and its influencing factors during the COVID-19 pandemic in Shanghai, China. Hum Vaccin Immunother 2022; 18:2069427. [PMID: 35727599 PMCID: PMC9302520 DOI: 10.1080/21645515.2022.2069427] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
This study aimed to understand the willingness of and affecting factors of non-national immunization program (non-NIP) vaccines among children's parents during the COVID-19 era in Shanghai, China. A cross-sectional survey was conducted with parents who attended vaccination clinics in four out of 16 districts in Shanghai, China. Data was obtained using a self-administered structured questionnaire. A multivariate logistic regression model was used to analyze factors associated with vaccination acceptability. In total, 1691 valid questionnaires were obtained. Of the participants, 69.5% (1,176/1,691) reported being interested in non-NIP vaccines for their children. Further, respondents were more likely to be willing to get non-NIP vaccines for their children if they had an income of 10,000-20,000CNY or more, an educational level of college or above, and if getting the vaccination was moderately convenient or convenient. Respondents were less likely to be willing to get the vaccines if they were in the 30-39 age group and had moderate or low satisfaction with the vaccine. Many parents are willing to get non-NIP vaccines for their children. However, some demographic factors, perceived convenience and satisfaction of vaccination, perceived necessity, safety and price barrier of non- NIP influenced the acceptability of non-NIP vaccines in Shanghai. Our findings can help guide future efforts to increase non-NIP vaccines acceptability.
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Affiliation(s)
- Linlin Wu
- Department of Immunization Program, Shanghai Municipal Centers for Disease Prevention and Control, Shanghai, China
| | - Zhuoying Huang
- Department of Immunization Program, Shanghai Municipal Centers for Disease Prevention and Control, Shanghai, China
| | - Xiang Guo
- Department of Immunization Program, Shanghai Municipal Centers for Disease Prevention and Control, Shanghai, China
| | - Jiechen Liu
- Department of Immunization Program, Shanghai Municipal Centers for Disease Prevention and Control, Shanghai, China
| | - Xiaodong Sun
- Department of Immunization Program, Shanghai Municipal Centers for Disease Prevention and Control, Shanghai, China
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Wu X, Zhao S, Jiang Y, Xiang X, Ge L, Chen Q, Wang Y, Vidal JE, Yu Y. Effect of pneumococcal conjugate vaccine availability on Streptococcus pneumoniae infections and genetic recombination in Zhejiang, China from 2009 to 2019. Emerg Microbes Infect 2022; 11:606-615. [PMID: 35135440 PMCID: PMC8865111 DOI: 10.1080/22221751.2022.2040921] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Pneumococcal pneumonia is one of the main reasons for child death worldwide. Pneumococcal conjugate vaccines (PCVs) are considered the most effective strategy for pneumococcal disease (PD) prevention, but how a pause in PCV vaccination affects the prevalence of PD or the genetic evolution of Streptococcus pneumoniae genetic evolution is unknown. Based on the unique PCV introduction timeline (vaccine unavailable during April 2015-April 2017) in China, we aimed to evaluate the effect of interrupted PCV availability on PD and pneumococcal genome variation. Pneumococcal isolates (n = 386) were collected retrospectively from eight sites in Zhejiang, China from 2009 to 2019 in which 184 pathogenic (isolates from sterile and infection sites) strains were identified. An interrupted time series analysis was conducted to estimate changes in PD and the recombination frequency of whole genome-sequenced strains was estimated via SNP calling. We found that both PD and pneumococcal genome variation were affected by interrupted PCV availability. The proportion (∼70%) of vaccine-type pneumococcal LRTI (VT-LRTI) in all LRTI cases decreased to ∼30% in the later PCV7 period and rebounded to ∼70% in children once PCV7 became unavailable in April 2015 (p = 0.0007). The major clone CC271 strains showed slowed (p = 0.0293) recombination frequency (decreased from 2.82 ± 1.16–0.72 ± 0.21) upon PCV removal. Our study illustrated for the first time that VT-LRTI fluctuated upon interrupted vaccine availability in China and causing a decreased of recombination frequency of vaccine types. Promoting a nationwide continuous vaccination programme and strengthening S. pneumoniae molecular epidemiology surveillance are essential for PD prevention.
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Affiliation(s)
- Xueqing Wu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China.,Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou 310052, Zhejiang, China.,Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
| | - Shanshan Zhao
- Department of Clinical Laboratory, Shangyu People's Hospital, Shaoxing 312300, Zhejiang, China
| | - Yan Jiang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China.,Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou 310052, Zhejiang, China.,Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
| | - Xi Xiang
- Department of Clinical Laboratory, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua 321000, Zhejiang, China
| | - Lihong Ge
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health. Hangzhou 310052, Zhejiang, China
| | - Qiong Chen
- Department of Clinical laboratory, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou 310052, Zhejiang, China
| | - Yanfei Wang
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China.,Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou 310052, Zhejiang, China.,Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
| | - Jorge E Vidal
- Department of Microbiology and Immunology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Yunsong Yu
- Department of Infectious Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China.,Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Hangzhou 310052, Zhejiang, China.,Regional Medical Center for National Institute of Respiratory Diseases, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
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10
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Zhang H, Zheng P, Zhang J, Qiu Q, Huang B, Feng H, Zhang Y, Chen X, Xu J, Dong X. Vaccine hesitancy among parents and its influencing factors: a cross-sectional study in Guangzhou, China. Hum Vaccin Immunother 2021; 17:5153-5161. [PMID: 34890304 PMCID: PMC8904018 DOI: 10.1080/21645515.2021.1984131] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 08/29/2021] [Accepted: 09/14/2021] [Indexed: 11/11/2022] Open
Abstract
Vaccine hesitancy is a major obstacle to the achievement of universal child vaccination, which has been studied extensively in Western countries but much less so in Asian countries, especially China. This cross-sectional survey is aimed to assess the prevalence of vaccine hesitancy and to explore the reasons for vaccine hesitancy among parents in Guangzhou. In January 2020, a questionnaire adapted to the Chinese setting from a widely-used hesitancy scale was administered to a sample of parents who brought their children aged <13 years to Community Health Service Centers for vaccination in Guangzhou. The incidence of vaccine hesitancy among those parents was 6.6% (50/755). Regression analysis showed that differences in socio-economic characteristics were not associated with the occurrence of vaccine hesitancy among parents in Guangzhou. However, strong distrust of domestic vaccine quality (OR = 10.9, 95% CI = 1.5-81.4), being required to have their children vaccinated for nursery and school entry (OR = 3.6, 95% CI = 1.7-7.7), and not being aware of which vaccines are officially required and which are optional (OR = 2.1, 95% CI = 1.1-4.3) were the risk factors significantly associated with vaccine hesitancy. In order to increase parents' trust in domestic vaccine quality and reduce the prevalence of vaccine hesitancy, it is essential to strengthen quality control in domestic vaccine manufacturing and to proactively disseminate clear and accurate information about vaccines to parents. Furthermore, advocating the value of vaccination among all citizens of Guangzhou is crucial.
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Affiliation(s)
- Hongyue Zhang
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Peng Zheng
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Jiayi Zhang
- Department of Medical Record Statistic, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Qianwen Qiu
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Bing Huang
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Huiyao Feng
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Yue Zhang
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Xiongfei Chen
- Department of Primary Public Health, Guangzhou Centers for Disease Control and Prevention, Guangzhou, Guangdong, China
- CONTACT Xiongfei Chen Guangzhou Centers for Disease Control and Prevention, Guangzhou, Guangdong, China
| | - Jun Xu
- College of Foreign Studies, Jinan University, Guangzhou, Guangdong, China
| | - Xiaomei Dong
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong, China
- Xiaomei Dong Department of Epidemiology, School of Medicine, Jinan University, No. 601 Huangpu Road West, Guangzhou, Guangdong510632, China
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11
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Jin J, Zhang C, Guo X, Zhang L, Mei K, Zhou B, Lu J, Lu Y. Vaccination experiences of premature children in a retrospective hospital-based cohort in a Chinese metropolitan area. Hum Vaccin Immunother 2021; 17:5235-5241. [PMID: 34736371 DOI: 10.1080/21645515.2021.1989924] [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: 10/19/2022] Open
Abstract
BACKGROUND In China, premature children in good health may be advised to receive routine immunization programs. However, delayed vaccination is common. This study aimed to characterize vaccination experiences of premature children and determine the impact of vaccination consultation clinic (VCC) assessment. METHODS We performed a retrospective cohort study, including premature children visiting VCC at Children's Hospital of Fudan University in 2017-2019. Data of these children, including demographics, recommendations of vaccination after VCC assessment, vaccination records, adverse events following immunization (AEFI), and incidence of vaccine-preventable diseases in 2017-2019, were collected retrospectively. RESULTS A total of 1124 premature children were included, with vaccination uptake of 46.3% for expanded program of immunization (EPI) vaccines and 15.1% for non-EPI vaccines before VCC assessment. Furthermore, 77.5% of premature children who had not received any EPI vaccine were vaccinated after the assessment; however, most were delayed, regardless of vaccine types and recommendations. In contrast, 67.3% was vaccinated with non-EPI vaccines after the assessment. Majority (n = 35) of recorded AEFI was mild to moderate, in addition to one allergic rash. One each case of pertussis and varicella were recorded in those who had not received the corresponding vaccines. CONCLUSION Vaccination may be safe and epidemiological effective in premature children. However, it remains mostly delayed in premature children with recommendations of normal vaccination. It warrants improving implementation of VCC recommendations. In addition, there is a need of health promotion on more non-EPI vaccines for premature children.
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Affiliation(s)
- Jie Jin
- Vaccination Consultation Clinic, Children's Hospital of Fudan University, Shanghai, China
| | - Chengjun Zhang
- Department of Epidemiology, Ministry of Education Key Laboratory of Public Health Safety, School of Public, Fudan University, Shanghai, China
| | - Xiang Guo
- Institute of Immunization, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China
| | - Liping Zhang
- Department of Immunization, Minhang District Center for Disease Control and Prevention, Shanghai, China
| | - Kewen Mei
- Department of Immunization, Minhang District Center for Disease Control and Prevention, Shanghai, China
| | - Beihua Zhou
- Vaccination Consultation Clinic, Children's Hospital of Fudan University, Shanghai, China
| | - Jia Lu
- Department of Immunization, Minhang District Center for Disease Control and Prevention, Shanghai, China
| | - Yihan Lu
- Department of Epidemiology, Ministry of Education Key Laboratory of Public Health Safety, School of Public, Fudan University, Shanghai, China
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12
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Peng S, Ren H, Deng J, Zhao N, Li Y, Li M, Yuan Q, Zhang Z, Luo L, Zeng L, Wang B, Zou N, Gu C, Huang X, Liao Z, Chen S, Chen H, Li Q, Qin T. Genotypic and phenotypic characteristics of Streptococcus pneumoniae from community-acquired pneumonia patients and healthy asymptomatic participants in Sichuan province, China. BMC Infect Dis 2021; 21:1030. [PMID: 34598707 PMCID: PMC8485506 DOI: 10.1186/s12879-021-06737-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 09/20/2021] [Indexed: 12/03/2022] Open
Abstract
Background Streptococcus pneumoniae (S. pneumoniae) is the common cause of community-acquired pneumonia (CAP) and is also found in the upper respiratory tract of healthy people. Hence, the study aimed to compare the serotypes, virulence/pili genes, and antibiotic susceptibility of S. pneumoniae from healthy asymptomatic participants and CAP patients. Methods Streptococcus pneumoniae were retrospectively collected from health asymptomatic participants and CAP patients in Sichuan, China. The serotypes were tested by multiplex polymerase chain reaction (PCR) or Quellung reaction. Antibiotic susceptibility testing was performed using the broth microdilution method. The molecular epidemiology of S. pneumoniae was analyzed by multilocus sequence typing (MLST). Additionally, the presence of virulence/pili genes were detected using PCR. Results A total of 83 pneumococcal isolates were collected in the current study. Of these, 52 and 31 isolates were from healthy asymptomatic participants and CAP patients, respectively. Most of S. pneumoniae were resistant to erythromycin (ERY), clindamycin (CLI), tetracycline (TET) and trimethoprim-sulfamethoxazole (SXT). 90.4% isolates were classified as multidrug resistant (MDR). The predominant serotypes were 3, 19F and 19A in the CAP carriers, whereas 3, 6 and 19F were the main serotypes among the asymptomatic carriers. The overall coverage rates of pneumococcal conjugate vaccine (PCV) 10 and PCV13 serotypes were 34.9% and 66.3%, respectively. The predominant sequence types (STs) were ST271, ST320, and ST3397. There were significant differences in some resistance and virulence characteristics between CAP patients and asymptomatic carriers. Additionally, clonal complex (CC) 271 strains had higher percentage in resistance to cefuroxime (CXM) and cefotaxime (CEF), meropenem (MER) and cefepime (CFP), which mainly carried the rlrA and sipA genes. Conclusions High coverage rate of PCV13 and high prevalence of MDR indicated the necessity to expand immunization with PCV13 and rationally use the antibiotics in Sichuan, China. Importantly, long-term surveillance should be conducted to assess effectiveness brought by vaccines. Our findings may supply new guidance for developing new pneumococcal vaccines.
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Affiliation(s)
- Shihui Peng
- The Collaboration Unit for Field Epidemiology of State Key Laboratory for Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-Origin and Vector-Borne Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, People's Republic of China
| | - Hongyu Ren
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, No. 155, Chang Bai Road, ChangPing District, Beijing, 102206, People's Republic of China
| | - Jianping Deng
- Zigong Center for Disease Control and Prevention, Zigong, People's Republic of China
| | - Na Zhao
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, No. 155, Chang Bai Road, ChangPing District, Beijing, 102206, People's Republic of China
| | - Yinan Li
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, No. 155, Chang Bai Road, ChangPing District, Beijing, 102206, People's Republic of China
| | - Ming Li
- Chengdu Center for Disease Control and Prevention, Chengdu, People's Republic of China
| | - Qiwu Yuan
- Chengdu Center for Disease Control and Prevention, Chengdu, People's Republic of China
| | - Zhengdong Zhang
- Zigong Center for Disease Control and Prevention, Zigong, People's Republic of China
| | - Longze Luo
- Sichuan Center for Disease Control and Prevention, Chengdu, People's Republic of China
| | - Linzi Zeng
- Sichuan Center for Disease Control and Prevention, Chengdu, People's Republic of China
| | - Bin Wang
- Zigong Center for Disease Control and Prevention, Zigong, People's Republic of China
| | - Nianli Zou
- Zigong Center for Disease Control and Prevention, Zigong, People's Republic of China
| | - Changguo Gu
- The Fifth People's Hospital of Chengdu, Chengdu, People's Republic of China
| | - Xin Huang
- The Fifth People's Hospital of Chengdu, Chengdu, People's Republic of China
| | - Zheng Liao
- The Collaboration Unit for Field Epidemiology of State Key Laboratory for Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-Origin and Vector-Borne Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, People's Republic of China
| | - Shenen Chen
- The Collaboration Unit for Field Epidemiology of State Key Laboratory for Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-Origin and Vector-Borne Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, People's Republic of China
| | - Haiying Chen
- The Collaboration Unit for Field Epidemiology of State Key Laboratory for Infectious Disease Prevention and Control, Jiangxi Provincial Key Laboratory of Animal-Origin and Vector-Borne Diseases, Nanchang Center for Disease Control and Prevention, Nanchang, People's Republic of China
| | - Qun Li
- Zigong Center for Disease Control and Prevention, Zigong, People's Republic of China
| | - Tian Qin
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, No. 155, Chang Bai Road, ChangPing District, Beijing, 102206, People's Republic of China.
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13
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Hu Y, Liang H, Chen F, Shen L, Pan X, Wang Y, Chen Y, Lv H. Evaluating the vaccination coverage: validity of household-hold vaccination booklet and caregiver's recall. Hum Vaccin Immunother 2021; 17:3034-3041. [PMID: 33825657 DOI: 10.1080/21645515.2021.1906151] [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
BACKGROUND We compared results from household data sources to medical record sources by using data from a vaccination coverage survey. METHODS Vaccination coverage (VC) was calculated based on parental recall, household vaccination booklet, and Zhejiang provincial immunization information system (ZJIIS). We evaluated the accuracy of VC based on household sources (vaccination booklet and recall) assuming the medical record was accurate. Concordance, sensitivity, specificity, positive predictive value, and negative predictive value were estimated as well as the Kappa statistic was also used to evaluate the agreement between data sources. RESULTS Among the 1,800 children identified in the household survey, all were registered in ZJIIS. VC estimated using the vaccination booklet alone was substantially lower than that based on medical records (net bias 3.4-16.7% in different age groups). VC based on parental recall ranged from 2.5% below (among children aged 1 year) to 16.7% points above (among children aged 6 years) than those based on medical records. Concordance was lowest for card estimates (32.5-45.5%). Sensitivity was <60% for all household sources, except for recall source. Specificity was lowest for recall estimates (14.5-42.6%). Positive predictive value was >75%, while negative predictive value was <50%, for all household sources. Kappa statistics generally indicated poor agreement between household and medical record sources. CONCLUSIONS Household-retained vaccination booklets and parental recall were insufficient sources for evaluating the VC. Our findings emphasized the importance of taking interventions to make the vaccination booklet more consistent with the records from medical resource.
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Affiliation(s)
- Yu Hu
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Hu Liang
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Fuxing Chen
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Linzhi Shen
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Xuejiao Pan
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Ying Wang
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Yaping Chen
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Huakun Lv
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
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Hu Y, Chen Y, Wang Y, Liang H, Lv H. The trends of socioeconomic inequities in full vaccination coverage among children aged 12-23 months from 2000 to 2017: evidence for mitigating disparities in vaccination service in Zhejiang province. Hum Vaccin Immunother 2021; 17:810-817. [PMID: 32730179 DOI: 10.1080/21645515.2020.1790907] [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: 10/23/2022] Open
Abstract
OBJECTIVE This study aimed to evaluate the trends and changes in inequities in the completeness of the primary vaccination (CPV) scheduled before the first year of age among children aged 12-23 months, from 2000 to 2017. Methods: Data were extracted from five rounds of the provincial vaccination coverage survey (PVCS) in 2000, 2004, 2008, 2014 and 2017, respectively. The household income per month was used as an index of socioeconomic status for the inequity analysis. The concentration index (CI) was used to quantify the degree of inequity, and the decomposition approach was applied to quantify the contributions from independent factors to inequity in the CPV. Results: The CPV was significantly improved from 2000 to 2017, with 67.0% for the 2000 PVCS and 86.0% for the 2017 PCVS. The CI value decreased from 0.29839 for the 2000 round to 0.03601 for the 2017 round. The decomposition analysis indicated that independent variables such as birth order, ethnic group, mother's education, maternal employment status, residence, immigration status and the percentage of the total health spending allocated to public health could explain the inequity in the CPV in varying degrees. Conclusions: A sharp reduction in socioeconomic inequity in the CPV was observed from 2000 to 2017. Policy recommendations to reduce the inequality in the CPV should focus on children with the risk factors found in this study, for better outcome in full vaccination and long-lasting herd immunity.
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Affiliation(s)
- Yu Hu
- Department of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Yaping Chen
- Department of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Ying Wang
- Department of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Hu Liang
- Department of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
| | - Huakun Lv
- Department of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou, China
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15
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Xu Y, Ji C, Liu Y, Li M, Yao D, Wang X, Du J, Chen J. Vaccination recommendations, immunization status and safety of vaccination for premature infants in Zhejiang, China. Expert Rev Vaccines 2020; 19:973-981. [PMID: 33001703 DOI: 10.1080/14760584.2020.1831917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVES More and more premature infants were born worldwide that are suffering from various complications, vaccination for whom is often delayed in China. We aim to describe current vaccination recommendations in practice, immunization status, and vaccination safety for premature infants in Zhejiang. METHODS The demographic information, medical records of treatments, and adverse events following immunization (AEFI) history were collected from infants' parents by questionnaire in the Vaccination Consultation Clinic(VCC). Vaccination data were retrieved from Zhejiang Provincial Immunization Information System. The information of AEFI was collected from the Chinese National Adverse Event Following Immunization Information System. RESULTS A total of 1515 premature infants visiting the VCC were included in the study. The majority (65.94%) of them were under 7 months. 47.59% of premature infants were advised to receive normal vaccinations, while 45.94% were advised to defer a specific vaccination and 6.47% were advised to defer all vaccinations. A total of 807 infants received 7187 vaccine doses were administered and only seven cases experienced mild and self-limiting adverse reactions (9.74/10,000). No uncommon or serious side effects were reported. CONCLUSION Most premature infants visiting the VCC did not receive vaccines on time. The majority of them can be safely vaccinated according to the national-recommended schedule.
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Affiliation(s)
- Yuyang Xu
- Department of Expanded Program on Immunization, Hangzhou Center for Disease Control and Prevention , Hangzhou, Zhejiang, China
| | - Chai Ji
- Department of Child Health Care, Children's Hospital Zhejiang University School of Medicine , Hangzhou, Zhejiang, China
| | - Yan Liu
- Department of Expanded Program on Immunization, Hangzhou Center for Disease Control and Prevention , Hangzhou, Zhejiang, China
| | - Mingyan Li
- Department of Child Health Care, Children's Hospital Zhejiang University School of Medicine , Hangzhou, Zhejiang, China
| | - Dan Yao
- Department of Child Health Care, Children's Hospital Zhejiang University School of Medicine , Hangzhou, Zhejiang, China
| | - Xia Wang
- Department of Child Health Care, Children's Hospital Zhejiang University School of Medicine , Hangzhou, Zhejiang, China
| | - Jian Du
- Department of Expanded Program on Immunization, Hangzhou Center for Disease Control and Prevention , Hangzhou, Zhejiang, China
| | - Junfang Chen
- Department of Expanded Program on Immunization, Hangzhou Center for Disease Control and Prevention , Hangzhou, Zhejiang, China
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16
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Liu X, Yang C, Qu X, Li N, Huang X, Yang Y, Zhao Y, Wang Y, Zhou H. Vaccination coverage and its determinants of live attenuated hepatitis A vaccine among children aged 24-59 months in 20 rural counties of 10 provinces of China in 2016. Hum Vaccin Immunother 2020; 16:1574-1578. [PMID: 31746666 DOI: 10.1080/21645515.2019.1688034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE To understand one single dose coverage of live attenuated hepatitis A vaccine and its determinants among children aged 24-59 months in 20 rural counties of 10 provinces of China in 2016. METHODS In 20 counties, using three-stage probability proportion to size sampling, 1979 children aged 24-59 months with a vaccination card were selected from 20 rural counties in 2016. Socio-demographic and socio-economic characteristics of children and their caregivers were acquired from face-to-face questionnaire survey and copies of the vaccination cards. We used multivariate logistic regression models to identify the determinants of one single dose coverage of live attenuated hepatitis A vaccine. RESULTS In 2016, the overall one single dose coverage of live attenuated hepatitis A vaccine among children aged 24-59 months in rural areas of China was 77.1%. The adjusted analysis showed that being in second birth order (adjusted OR: 1.40; 95%CI: 1.03-1.90), being in third birth order or more (adjusted OR: 2.10; 95%CI: 1.26-3.51), being born at home (adjusted OR: 2.01; 95%CI: 1.04-3.88) and having the lowest per capita income of household (adjusted OR: 2.36; 95%CI: 1.11-4.99) were significantly related to being unvaccinated one single dose coverage of live attenuated hepatitis A vaccine against hepatitis A virus. CONCLUSION one single dose coverage of live attenuated hepatitis A vaccine was still at a low level in 20 rural counties of 10 provinces in China. To improve the coverage of live attenuated hepatitis A vaccine, the government should pay more attention to the disadvantaged groups, especially the children who were in second birth order or higher, or delivered at home, or who have the lowest per capita income of household.
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Affiliation(s)
- Xiaoli Liu
- Research Center of Clinical Epidemiology, Peking University Third Hospital , Beijing, China
| | - Chenlu Yang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University , Beijing, China
| | - Xueqi Qu
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health , Baltimore, MD, USA
| | - Nan Li
- Research Center of Clinical Epidemiology, Peking University Third Hospital , Beijing, China
| | | | | | - Yiming Zhao
- Research Center of Clinical Epidemiology, Peking University Third Hospital , Beijing, China
| | - Yan Wang
- Department of Maternal and Child Health, School of Public Health, Peking University , Beijing, China
| | - Hong Zhou
- Department of Maternal and Child Health, School of Public Health, Peking University , Beijing, China
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Yan R, He H, Zhou Y, Xie S, Deng X, Tang X. Study on factors associated with seroprotection after measles vaccination in children of 6–14 years in Eastern China. Vaccine 2019; 37:5185-5190. [DOI: 10.1016/j.vaccine.2019.07.075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 07/02/2019] [Accepted: 07/23/2019] [Indexed: 12/16/2022]
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18
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Chang J, Hou Z, Fang H, Meng Q. Are providers' recommendation and knowledge associated with uptake of optional vaccinations among children? A multilevel analysis in three provinces of China. Vaccine 2019; 37:4133-4139. [PMID: 31174935 DOI: 10.1016/j.vaccine.2019.05.070] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 05/13/2019] [Accepted: 05/24/2019] [Indexed: 11/16/2022]
Abstract
BACKGROUND Immunization services providers play a crucial role in the successful implementation of immunization, particularly for new vaccines. Several childhood vaccinations that are important for public health are not included in the National Immunization Programme in China, although they are available as optional and self-paid vaccines. Their coverage remains low. OBJECTIVE To examine the association between providers' knowledge and recommendations of optional vaccines, as well as other supply- and demand-side factors, and their uptake among children. METHODS A cross-sectional study, that included an in-person questionnaire survey for parents of children under-3 years and a self-administrative questionnaire survey for their vaccination services providers, was conducted in 36 townships or sub-districts in three provinces of China in 2013. Using a sample of 1791 household from 30 townships or sub-districts, we applied multilevel logistic analyses to examine the factors associated with the uptake of optional vaccines based on a hierarchal framework that combined demand-side and supply-side factors. RESULTS Coverage of optional childhood vaccinations varied across small areas. Supply- and demand-side factors were both associated with the uptake of these vaccines. Immunization services providers' recommendations and their knowledge about optional vaccination were positively and significantly associated with uptake. Children were more likely to receive the vaccines if they lived in communities with higher immunization worker density or larger immunization clinics. Several demand-side psychological factors about childhood vaccination were also associated with optional vaccinations. CONCLUSIONS Promoting immunization services providers to conduct evidence-based recommendations about some important childhood optional vaccinations and enhancing their knowledge regarding optional vaccinations and communication skills are useful strategies to increase the coverage of these vaccinations.
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Affiliation(s)
- Jie Chang
- Department of Pharmacy Administration and Clinical Pharmacy, School of Pharmacy, Xi'an Jiaotong University, Xi'an 710061, China; Center for Drug Safety and Policy Research, Xi'an Jiaotong University, Xi'an 710061, China
| | - Zhiyuan Hou
- School of Public Health, National Key Laboratory of Health Technology Assessment (National Health Commission), Collaborative Innovation Center of Social Risks Governance in Health, Fudan University, Shanghai 200032, China
| | - Hai Fang
- China Center for Health Development Studies, Peking University, Beijing 100191, China
| | - Qingyue Meng
- China Center for Health Development Studies, Peking University, Beijing 100191, China.
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Coverage of Haemophilus influenzae Type b Conjugate Vaccine for Children in Mainland China: Systematic Review and Meta-analysis. Pediatr Infect Dis J 2019; 38:248-252. [PMID: 29957731 DOI: 10.1097/inf.0000000000002132] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
BACKGROUND Use of Haemophilus influenzae type b conjugate vaccine is effective in reducing the disease burden, but its coverage in China is unclear. The aim of this meta-analysis is to assess the coverage of Hib conjugate vaccines in children in Mainland China. METHODS We systematically searched Pubmed, Web of Science, Medline, CNKI and Wanfang to identify studies assessing the coverage of Hib vaccine in Chinese children. Random-effects models were used to obtain pooled estimates for Hib vaccine coverage and analyzed heterogeneity with meta-regression and subgroup analyses. RESULTS Thirty-three studies that included 7,227,480 subjects in 12 provinces met our inclusion criteria. The pooled overall coverage of Hib conjugate vaccine was 54.9% [95% confidence interval (CI): 52.9-57.0]. The pooled coverage for the nonlocal population (54.3%; 95% CI: 52.4-56.3) was lower than that for the local residents (62.0%; 95% CI: 58.4-65.6). The region-pooled coverage was higher in the east of China (59.7%; 95% CI: 57.3-62.1) than in the central and west parts of the country (48.5%; 95% CI: 40.6-56.4). Overall, 26.7% (95% CI: 20.1-33.2) had 1 dose only, 14.8% (95% CI: 10.0-19.6%) had 2 doses, 13.5% (95% CI: 9.1-17.8) had 3 doses and 14.3% (95% CI: 9.7-18.9) had 4 doses. CONCLUSIONS We found a low coverage of Hib conjugate vaccine, particularly for the nonlocal children and those living in the central and west parts of China. Including Hib vaccine into the national immunization program is recommended to reduce disparities in vaccination coverage.
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Hu Y, Chen Y, Wang Y, Liang H. Hepatitis B Vaccination among 1999⁻2017 Birth Cohorts in Zhejiang Province: The Determinants Associated with Infant Coverage. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15122915. [PMID: 30572681 PMCID: PMC6313558 DOI: 10.3390/ijerph15122915] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/16/2018] [Accepted: 12/17/2018] [Indexed: 01/29/2023]
Abstract
This study aimed to investigate the coverage of hepatitis B vaccine (Hep B) and its completeness and timeliness for birth cohorts from 1999 to 2017 in Zhejiang province, East China. Demographic characteristics and vaccination records of Hep B of children born from 1 January 1999 to 31 June 2017 were extracted from the Zhejiang provincial immunization information system. The timeliness of the first dose of Hep B (Hep B1) was defined as the proportion of children who received the Hep B1 within 24 h after birth among the target population. The completeness of Hep B was defined as the proportion of children who completed the three-dose series of Hep B before 7 years of age. The demographic characteristics of the target population were described. The coverage of each dose of Hep B, the timeliness of Hep B1, and the completeness of Hep B for each birth cohort were described. A logistic regression model was applied to detect the determinants of the timeliness of Hep B1 and the completeness of Hep B vaccination. The coverage of Hep B1 increased from 90.3% to 98.3%, the coverage of Hep B2 increased from 88.8% to 96.1%, and the coverage of Hep B3 increased from 86.4% to 94.2%. The timeliness of Hep B1 increased from 80.3% to 91.3%. The completeness of Hep B increased from 81.3% to 91.5%. The determinants of timeliness of Hep B1 included children’s delivery place, immigration status, maternal education level, and economic development level of resident area. The determinants of completeness of Hep B included children’s delivery place, immigration status, maternal education level, economic development level of resident area, maternal occupation, and frequency of vaccination service. Zhejiang province had achieved significant improvements in the timely administration of Hep B1 and the completeness of Hep B. To accelerate progress toward additional reductions in the transmission of hepatitis B virus, further efforts need to be focused on improving the timeliness of Hep B1 vaccination and reducing the drop-outs among disadvantaged children with the risk factors identified in this study.
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Affiliation(s)
- Yu Hu
- Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310000, China.
| | - Yaping Chen
- Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310000, China.
| | - Ying Wang
- Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310000, China.
| | - Hui Liang
- Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310000, China.
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Wu JN, Zhou Y. Factors associated with and screening models of national immunization programme vaccine series completion among preschool children in Fujian Province, south-eastern China. J Infect Public Health 2018; 12:236-241. [PMID: 30442526 DOI: 10.1016/j.jiph.2018.10.011] [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: 05/25/2018] [Revised: 10/21/2018] [Accepted: 10/23/2018] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND An effective method for the rapid identification of vulnerable preschool children at risk of not completing the national immunization programme (NIP) vaccine series in China is still lacking. METHODS A cross-sectional study involving 772 preschool children born between September 1 2009 and August 31, 2011 was conducted in 2015 in Fujian Province, south-eastern China. The data were collected by face-to-face interviews with the parents or guardians of the children using a standard questionnaire. RESULTS Children who received the first dose of a hepatitis B vaccine (HepB) less than 24h after birth and those who received one or more doses of surrogate for-fee vaccines (SFVs) were more likely to complete the NIP vaccine series with adjusted odds ratios (ORs) of 3.12 (95% confidence interval [CI]: 1.19-8.23) and 4.74 (1.41-15.90), respectively. The cut-off value of the prediction score for the completion of the NIP vaccine series was 92.5%, and the sensitivity, specificity, and positive and negative predictive values were 87.5%, 47.1%, 11.4% and 98.0%, respectively. CONCLUSIONS The receipt of a timely first dose of HepB and one or more doses of SFVs were associated with and good predictors of NIP vaccine series completion by preschool children in Fujian, China.
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Affiliation(s)
- Jiang-Nan Wu
- Department of Clinical Epidemiology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, 200011, China.
| | - Yong Zhou
- Fujian Provincial Centers for Disease Control and Prevention, Fuzhou, 350000, China.
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An Overview of Coverage of BCG Vaccination and Its Determinants Based on Data from the Coverage Survey in Zhejiang Province. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15061155. [PMID: 29865207 PMCID: PMC6025410 DOI: 10.3390/ijerph15061155] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 05/29/2018] [Accepted: 05/30/2018] [Indexed: 11/17/2022]
Abstract
To assess the Bacille Calmette-Guérin (BCG) vaccination coverage in Zhejiang province and to investigate predictors of the BCG vaccination, we used data from the 2017 Zhejiang provincial coverage survey. Demographic and immunization data on the selected children, their mothers, and their families were also collected by using a pre-tested questionnaire. BCG scars were verified among children who were available at the moment of survey. Coverage of BCG and other expanded program on immunization (EPI) vaccines scheduled before the first year of life was calculated. BCG coverage through the scar assessment and timeliness of BCG were also presented. Multivariate analyses of the predictors associated with the BCG vaccination and its timeliness were conducted separately. In total, 1393 children agreed to participate in the survey and presented the immunization cards. Of them, the coverage of BCG was 92.0% and 88.3% received the BCG within the first 28 days after birth. Besides this, 1282 out of the 1393 children were screened for the BCG scars and 97.1% of them had developed the scars. The multivariable logistic regression analyses indicated that hospital delivery, higher maternal education, a mother with no job, and a resident child were positively associated with the higher BCG vaccination coverage and its timely administrations. BCG coverage was optimal and it was administered in a timely manner. The majority of children vaccinated with BCG developed scars. Tailored interventions should be more greatly focused on and targeted to children with the risk factors identified in this study.
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Hu Y, Chen Y, Wang Y, Liang H. Evaluation of potentially achievable vaccination coverage of the second dose of measles containing vaccine with simultaneous administration and risk factors for missed opportunities among children in Zhejiang province, east China. Hum Vaccin Immunother 2018; 14:875-880. [PMID: 29252094 DOI: 10.1080/21645515.2017.1419111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
OBJECTIVES This study aimed to evaluate the potential achievable coverage of the second dose of measles containing vaccine (MCV2) when the protocol of simultaneous administration of childhood vaccines was fully implemented. Risk factors for missed opportunity (MO) for simultaneous administration of MCV2 were also investigated. METHODS Children born from 1 January 2005 to 31 December 2014 and registered in Zhejiang provincial immunization information system were enrolled in this study. The MO of simultaneous administration of MCV2, the actual age-appropriate coverage (AAC) of MCV2 and the potentially achievable coverage (PAC) of MCV2 were evaluated and compared across different birth cohorts, by different socio-demographic variables. For the 2014 birth cohort, logistic regression model was used to detect the risk factors of MOs, from both socio-demographic and vaccination service providing aspects. RESULTS Compared to the AAC, the PAC of MCV2 increased significantly from 2005 birth cohort to 2014 birth cohort (p<0.001), with a median of 12.7 percentage points. Higher birth order of children, resident children, higher maternal education background, higher socio-economic development level of resident areas, less frequent vaccination service, and shorter vaccination service time were significant risk factors of MO for simultaneous administration of MCV2, with all p-value < 0.05. CONCLUSION The findings in this study suggest that fully utilization of all opportunities for simultaneous administration of all age-eligible vaccine doses at the same vaccination visit is critical for achieving the coverage target of 95% for MCV2. Future interventions focusing on the group with risk factors observed could substantially eliminate MOs for simultaneous administration of MCV2, further to improve the coverage of fully immunization of MCV, and finally achieve the goal of eliminating measles.
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Affiliation(s)
- Yu Hu
- a Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention , Hangzhou , Zhejiang , China
| | - Yaping Chen
- a Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention , Hangzhou , Zhejiang , China
| | - Ying Wang
- a Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention , Hangzhou , Zhejiang , China
| | - Hui Liang
- a Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention , Hangzhou , Zhejiang , China
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Hu Y, Li Q, Chen Y. Evaluation of two health education interventions to improve the varicella vaccination: a randomized controlled trial from a province in the east China. BMC Public Health 2018; 18:144. [PMID: 29338782 PMCID: PMC5771153 DOI: 10.1186/s12889-018-5070-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 01/11/2018] [Indexed: 11/13/2022] Open
Abstract
Background We evaluated the effect of two Elaboration Likelihood Model (ELM)-based health educational interventions on varicella vaccine (VarV) vaccination among pregnant women in a province in the east China. Methods A prospective randomized controlled trial was conducted among 200 pregnant women with ≥12 gestation weeks to test two interventions, including a messaging video and a messaging booklet. The participants were randomly assigned into the control group, the video group or the booklet group. The VarV coverage at 12 and 24 months old was compared among the children of the three groups and relative risks (RRs) were calculated, by using the coverage of the control group as reference. The timeliness of VarV was also assessed. Furthermore, differences in the effects on the knowledge and attitude of VarV vaccination between the two interventions was evaluated. Results The VarV coverage of their children by 24 months of age was 86.4%, 76.1% and 56.7% for the video group, the booklet group and the control group, respectively. The relative risks (RRs) for the coverage of VarV at 24 months of age were 4.8 (95% CI: 2.06–11.3) for the video group and 2.4 (95% CI: 1.2–5.1) for the booklet group. The means of delays were 57.3 days in the video group, 76.9 days in the booklet group, and 100.6 days in the control group. The proportion of women who intended to vaccinate their children with VarV was higher in the video group than the booklet group (93.9% vs. 82.1%, p < 0.05). Conclusions Our findings indicated that perinatal health education through booklet or video could improve the coverage and schedule adherence for children’s VarV vaccination.
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Affiliation(s)
- Yu Hu
- Department of Expanded Program on Immunization, Zhejiang Provincial Center for Disease Control and Prevention, No. 3399 Binsheng Road, Binjiang District, Hangzhou, People's Republic of China
| | - Qian Li
- Department of Expanded Program on Immunization, Zhejiang Provincial Center for Disease Control and Prevention, No. 3399 Binsheng Road, Binjiang District, Hangzhou, People's Republic of China
| | - Yaping Chen
- Department of Expanded Program on Immunization, Zhejiang Provincial Center for Disease Control and Prevention, No. 3399 Binsheng Road, Binjiang District, Hangzhou, People's Republic of China.
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Hu Y, Chen Y, Wang Y, Liang H. Knowledge, Attitude and Practice of Pregnant Women towards Varicella and Their Children's Varicella Vaccination: Evidence from Three Distrcits in Zhejiang Province, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14101110. [PMID: 28946647 PMCID: PMC5664611 DOI: 10.3390/ijerph14101110] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Revised: 09/15/2017] [Accepted: 09/22/2017] [Indexed: 11/16/2022]
Abstract
Background: The objectives of this study were to examine the knowledge, attitudes and practice (KAP) towards varicella and varicella vaccine (VarV) vaccination among pregnant women in three distrcits in Zhejiang Province, China. Methods: From 1 January to 31 March 2014, pregnant women with ≥12 gestational weeks were recruited and received a self-administrated questionnaire. The first dose of VarV (VarV1) vaccination status of children from present pregnancy was extracted at 24 months of age from Zhejiang provincial immunization information system (ZJIIS). Three variables was defined as the main outcomes, which included: (1) knowing about both the availability of VarV and the number of doses required; (2) positive attitude towards the utility of varicella vaccination; (3) the vaccination coverage of VarV1, which meant the proportion of children having received the VarV1. Counts and proportions were used to describe the socio-demographic characteristics of study participants, and their relationship with study outcomes were tested using chi-square tests in univariate analysis and logistic regression in multivariable analysis. Results: A total of 629 pregnant women participated in this study. The majority of the participants (68.0%) answered correctly about the transmission route of varicella. The proportion of participants who heard about varicella vaccination was 76.5% and 66.8% knew that VarV was currently available. Only 13.5% of the participants answered correctly that the complete VarV series needed two doses. Age, immigration status, education level, household income, and number of children of the pregnant women were significant predictors of the KAP regarding the VarV vaccination. Conclusions: The current survey indicated that optimal KAP levels and coverage on VarV vaccination were observed in three districts of Zhejiang Province. Health education programs on varicella and VarV vaccination directed towards both pre-natal and post-natal women are needed, which will result in a better attitude on vaccination of VarV and in a high coverage of VarV.
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Affiliation(s)
- Yu Hu
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, No. 3399 Binsheng Road, Binjiang District, Hangzhou 310051, China.
| | - Yaping Chen
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, No. 3399 Binsheng Road, Binjiang District, Hangzhou 310051, China.
| | - Ying Wang
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, No. 3399 Binsheng Road, Binjiang District, Hangzhou 310051, China.
| | - Hui Liang
- Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, No. 3399 Binsheng Road, Binjiang District, Hangzhou 310051, China.
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Wu JN, Li DJ, Zhou Y, Du MR, Piao HL. Relationship between receipt of substitutable for-fee vaccines and completion of the expanded programme on immunisation: a cross-sectional study in Fujian, China. BMJ Open 2017; 7:e015666. [PMID: 28729316 PMCID: PMC5642657 DOI: 10.1136/bmjopen-2016-015666] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the relationship between receipt of the substitutable-for-fee vaccines (SFV) and completion of the expanded programme on immunisation (EPI). DESIGN AND SETTINGS A cross-sectional study was conducted in Fujian province, China. PARTICIPANTS Children who were born from 1 September 2009 to 31 August 2011, and who had been residing in the township for at least 3 months, were randomly recruited from 34 townships. MAIN OUTCOMES MEASURES Outcomes were completion rate of the EPI and coverage rate of the SFV. RESULTS The study included 1428 children, of whom 1350 (94.5%) finished the EPI and 282 (19.7%) received at least one dose of the SFV. Administration of the SFV was associated with an increased likelihood of completing the EPI (OR=3.2, 95% CI 1.3 to 7.6 in the total sample and OR=4.0, 95% CI 1.7 to 9.6 in the subsample of children in regions with the SFV accessibility). The impact of the SFV administration on completion of the EPI was larger among children whose parents have junior school education or less (97.8% and 97.9% vs 92.5% and 91.9%, both p<0.001) and among those with a timely hepatitis B vaccine first dose (98.5% vs 94.0%, p<0.001). CONCLUSIONS Receipt of SFV is associated with increased likelihood of completion of the EPI in Fujian, China.
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Affiliation(s)
- Jiang-Nan Wu
- Department of Clinical Epidemiology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Da-Jin Li
- Department of Clinical Epidemiology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Yong Zhou
- Department of Expanded Programme on Immunization, Fujian Provincial Center for Disease Control and Prevention, Fuzhou, China
| | - Mei-Rong Du
- Department of Clinical Epidemiology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Hai-Lan Piao
- Department of Clinical Epidemiology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
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Yue C, Li Y, Wang Y, Liu Y, Cao L, Zhu X, Martin K, Wang H, An Z. The varicella vaccination pattern among children under 5 years old in selected areas in China. Oncotarget 2017; 8:45612-45618. [PMID: 28487494 PMCID: PMC5542212 DOI: 10.18632/oncotarget.17317] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 04/05/2017] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Vaccine is the most effective way to protect susceptible children from varicella. Few published literature or reports on varicella vaccination of Chinese children exist. Thus, in order to obtain specific information on varicella vaccination of this population, we conducted this survey. METHODOLOGY We first used purposive sampling methods to select 6 provinces 10 counties from eastern, middle and western parts of China with high quality of Immunization Information Management System (IIMS), and then randomly select children from population in the IIMS, then we checked vaccination certificate on-site. PRINCIPAL FINDINGS Based on the varicella vaccination information collected from 481 children's vaccination certificates from all ten selected counties in China, overall coverage of the first dose of varicella vaccine was 73.6%. There is a positive linear correlation between per capita GDP and vaccine coverage at county level (r=0.929, P < 0.01). The cumulative vaccine coverage among children at 1 year, 2 years and ≥3 years old were 67.6%, 71.9% and 73.6% respectively (X2=4.53, P =0.10). The age of vaccination was mainly concentrated in 12-17 months. CONCLUSIONS The coverage rate of the first dose of varicella vaccine in selected areas was lower than that recommended by WHO position paper. The coverage rate was relatively low in areas of low social-economic status. The cumulative coverage had no significant statistical difference among different age group. Most children received varicella vaccine before 3 years old. We suggest introducing the varicella vaccine into routine immunization program, to ensure universal high coverage among children in China. We also suggest that varicella vaccination information should be checked before entering school, in order to control and prevent varicella outbreaks in schools.
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Affiliation(s)
- Chenyan Yue
- The Department of National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Yan Li
- The Department of National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Yamin Wang
- The Department of National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Yan Liu
- Hangzhou Center for Disease Control and Prevention, Hangzhou, Zhejiang, 310021, China
| | - Linsheng Cao
- The Department of National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Xu Zhu
- China Office of United Nations Children's Fund, Beijing, 100600, China
| | - Kathryn Martin
- China Office of United Nations Children's Fund, Beijing, 100600, China
| | - Huaqing Wang
- The Department of National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
| | - Zhijie An
- The Department of National Immunization Programme, Chinese Center for Disease Control and Prevention, Beijing, 100050, China
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Hu Y, Wang Y, Chen Y, Li Q. Determinants of inequality in the up-to-date fully immunization coverage among children aged 24-35 months: Evidence from Zhejiang province, East China. Hum Vaccin Immunother 2017; 13:1902-1907. [PMID: 28604178 DOI: 10.1080/21645515.2017.1327108] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVE This study aimed to determine the degree and determinants of inequality in up-to-date fully immunization (UTDFI) coverage among children of Zhejiang province, east China. METHOD We used data from the Zhejiang provincial vaccination coverage survey of 2014 and the health outcome was the UTDFI status among children aged 24-35 months. The household income per month was used as an index of socio-economic status for the inequality analysis. The concentration index (CI) was used to quantify the degree of inequality and the decomposition approach was applied to quantify the contributions from demographic factors to inequality in UTDFI coverage. RESULTS The UTDFI coverage was 80.63% and the CI for UTDFI coverage was 0.12028 (95% CI: 0.10852-0.13175), indicating that immunization practice significantly favored children with relatively higher socio-economic status. The results of decomposition analysis suggested that 68.2% of the socio-economic inequality in UTDFI coverage should be explained by the mother's education level. Furthermore, factors such as birth order, ethnic group, maternal employment status, residence, immigration status, GDP per-capital and percentage of public health spending of the total health spending also could explain the disparity in UTDFI coverage. CONCLUSION There exists inequality in UTDFI coverage among the socio-economic disadvantage children. Health interventions of narrowing the socio-economic inequality in UTDFI coverage will benefit from being supplemented with strategies aimed at poverty and illiteracy reduction.
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Affiliation(s)
- Yu Hu
- a Institute of Immunization and Prevention , Zhejiang Provincial Center for Disease Control and Prevention , Hangzhou , Zhejiang , China
| | - Ying Wang
- a Institute of Immunization and Prevention , Zhejiang Provincial Center for Disease Control and Prevention , Hangzhou , Zhejiang , China
| | - Yaping Chen
- a Institute of Immunization and Prevention , Zhejiang Provincial Center for Disease Control and Prevention , Hangzhou , Zhejiang , China
| | - Qian Li
- a Institute of Immunization and Prevention , Zhejiang Provincial Center for Disease Control and Prevention , Hangzhou , Zhejiang , China
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Lv M, Bai S, Sun Y, Zhang T, Li A, Wu J. Impact of the Pneumococcal Heptavalent Conjugated Vaccine on <i>Streptococcus pneumoniae</i> Nasopharyngeal Carriage and Antimicrobial Susceptibility in Children 2-5-Year-Old in Beijing, China. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/wjv.2017.73003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Hu Y, Zhang X, Li Q, Chen Y. Auditing the Immunization Data Quality from Routine Reports in Shangyu District, East China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13111158. [PMID: 27869729 PMCID: PMC5129368 DOI: 10.3390/ijerph13111158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Revised: 11/10/2016] [Accepted: 11/17/2016] [Indexed: 11/16/2022]
Abstract
Objective: To evaluate the immunization data quality in Shangyu District, East China. Methods: An audit for immunization data for the year 2014 was conducted in 20 vaccination clinics of Shangyu District. The consistency of immunization data was estimated by verification factors (VFs), which was the proportion of vaccine doses reported as being administered that could be verified by written documentation at vaccination clinics. The quality of monitoring systems was evaluated using the quality index (QI). Results: The VFs of 20 vaccine doses ranged from 0.94 to 1.04 at the district level. The VFs for the 20 vaccination clinics ranged from 0.57 to 1.07. The VFs for Shangyu District was 0.98. The mean of total QI score of the 20 vaccination clinics was 80.32%. A significant correlation between the VFs of the 3rd dose of the diphtheria-tetanus-pertussis combined vaccine (DTP) and QI scores was observed at the vaccination clinic level. Conclusions: Deficiencies in data consistency and immunization reporting practice in Shangyu District were observed. Targeted measures are suggested to improve the quality of the immunization reporting system in vaccination clinics with poor data consistency.
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Affiliation(s)
- Yu Hu
- Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310021, China.
| | - Xinpei Zhang
- Shangyu District Center for Disease Control and Prevention, Shangyu 312300, China.
| | - Qian Li
- Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310021, China.
| | - Yaping Chen
- Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310021, China.
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Hu Y, Chen Y, Zhang B, Li Q. An Evaluation of Voluntary Varicella Vaccination Coverage in Zhejiang Province, East China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13060560. [PMID: 27271649 PMCID: PMC4924017 DOI: 10.3390/ijerph13060560] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 05/26/2016] [Accepted: 05/31/2016] [Indexed: 11/17/2022]
Abstract
Background: In 2014 a 2-doses varicella vaccine (VarV) schedule was recommended by the Zhejiang Provincial Center for Disease Control and Prevention. We aimed to assess the coverage of the 1st dose of VarV (VarV1) and the 2nd dose of VarV (VarV2) among children aged 2–6 years through the Zhejiang Provincial Immunization Information System (ZJIIS) and to explore the determinants associated with the VarV coverage. Methods: Children aged 2–6 years (born from 1 January 2009 to 31 December 2013) registered in ZJIIS were enrolled. Anonymized individual records of target children were extracted from the ZJIIS database on 1 January 2016, including their VarV and (measles-containing vaccine) MCV vaccination information. The VarV1 and VarV2 coverage rates were evaluated for each birth cohorts. The coverage of VarV also was estimated among strata defined by cities, gender and immigration status. We also evaluated the difference in coverage between VarV and MCV. Results: A total of 3,028,222 children aged 2–6 years were enrolled. The coverage of VarV1 ranged from 84.8% to 87.9% in the 2009–2013 birth cohorts, while the coverage of VarV2 increased from 31.8% for the 2009 birth cohort to 48.7% for the 2011 birth cohort. Higher coverage rates for both VarV1 and VarV2 were observed among resident children in relevant birth cohorts. The coverage rates of VarV1 and VarV2 were lower than those for the 1st and 2nd dose of MCV, which were above 95%. The proportion of children who were vaccinated with VarV1 at the recommended age increased from 34.6% for the 2009 birth cohort to 75.2% for the 2013 birth cohort, while the proportion of children who were vaccinated with VarV2 at the recommended age increased from 19.7% for the 2009 birth cohort to 48.7% for the 2011 birth cohort. Conclusions: Our study showed a rapid increasing VarV2 coverage of children, indicating a growing acceptance of the 2-doses VarV schedule among children’s caregivers and physicians after the new recommendation released. We highlighted the necessity for a 2-doses VarV vaccination school-entry requirement to achieve the high coverage of >90% and to eliminate disparities in coverage among sub-populations. We also recommended continuous monitoring of the VarV coverage via ZJIIS over time.
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Affiliation(s)
- Yu Hu
- Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China.
| | - Yaping Chen
- Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China.
| | - Bing Zhang
- Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China.
| | - Qian Li
- Institute of Immunization and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China.
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