Assessing vaccination coverage, timeliness, and its temporal variations among children in a rural area in China
China has achieved high vaccination coverage under the Expanded Program on Immunization (EPI) in children 1–2 years of age. However, a knowledge gap exists regarding vaccination coverage and timeliness for children >2 years of age. As such, this study aimed to estimate coverage and timeliness for...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-02-01
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| Series: | Human Vaccines & Immunotherapeutics |
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| Online Access: | http://dx.doi.org/10.1080/21645515.2020.1772620 |
| _version_ | 1797677273609928704 |
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| author | Yangni He Yang Liu Bingbing Dai Liang Zhao Jiqun Lin Juan Yang Hongjie Yu |
| author_facet | Yangni He Yang Liu Bingbing Dai Liang Zhao Jiqun Lin Juan Yang Hongjie Yu |
| author_sort | Yangni He |
| collection | DOAJ |
| description | China has achieved high vaccination coverage under the Expanded Program on Immunization (EPI) in children 1–2 years of age. However, a knowledge gap exists regarding vaccination coverage and timeliness for children >2 years of age. As such, this study aimed to estimate coverage and timeliness for all EPI and selected non-EPI vaccines within a rural area of China. Immunization data for 5091 children, born between September 2003 and November 2015, were collected from vaccination cards obtained during sero-surveillance follow-up visits and/or from the Hunan immunization information system. For each dose of both EPI and non-EPI vaccines, vaccination coverage and timeliness were calculated, and temporal variations were examined across birth cohorts. We found coverage for EPI vaccines scheduled for <12 months was 97.1%-99.4%. However, for EPI vaccines scheduled at 6 years coverage was 44.4%-51.7%. The timeliness for EPI vaccines was generally poor, especially for EPI vaccines introduced after 2008 or scheduled for administration at ≥12 months, with a maximum of 35.4% of children vaccinated according to schedule. Despite this, we found increasing trends in vaccination coverage and improvements in timeliness for EPI vaccines. However, for non-EPI vaccines, we found only moderate increases, and in some cases decreases, in vaccination coverage. This study demonstrates the success and improvement of the Chinese immunization program, but also highlights some challenges to be addressed. We recommend that future changes in vaccine practice and policy should primarily focus on improving coverage and timeliness of vaccines introduced after 2008, and/or scheduled for administration ≥12 months. |
| first_indexed | 2024-03-11T22:42:33Z |
| format | Article |
| id | doaj.art-436fe14ae9914f4c909a406af7e99786 |
| institution | Directory Open Access Journal |
| issn | 2164-5515 2164-554X |
| language | English |
| last_indexed | 2024-03-11T22:42:33Z |
| publishDate | 2021-02-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Human Vaccines & Immunotherapeutics |
| spelling | doaj.art-436fe14ae9914f4c909a406af7e997862023-09-22T08:51:49ZengTaylor & Francis GroupHuman Vaccines & Immunotherapeutics2164-55152164-554X2021-02-0117259260010.1080/21645515.2020.17726201772620Assessing vaccination coverage, timeliness, and its temporal variations among children in a rural area in ChinaYangni He0Yang Liu1Bingbing Dai2Liang Zhao3Jiqun Lin4Juan Yang5Hongjie Yu6Fudan UniversityLondon School of Hygiene & Tropical MedicineAnhua County Center for Disease Control and PreventionAnhua County Center for Disease Control and PreventionAnhua County Center for Disease Control and PreventionFudan UniversityFudan UniversityChina has achieved high vaccination coverage under the Expanded Program on Immunization (EPI) in children 1–2 years of age. However, a knowledge gap exists regarding vaccination coverage and timeliness for children >2 years of age. As such, this study aimed to estimate coverage and timeliness for all EPI and selected non-EPI vaccines within a rural area of China. Immunization data for 5091 children, born between September 2003 and November 2015, were collected from vaccination cards obtained during sero-surveillance follow-up visits and/or from the Hunan immunization information system. For each dose of both EPI and non-EPI vaccines, vaccination coverage and timeliness were calculated, and temporal variations were examined across birth cohorts. We found coverage for EPI vaccines scheduled for <12 months was 97.1%-99.4%. However, for EPI vaccines scheduled at 6 years coverage was 44.4%-51.7%. The timeliness for EPI vaccines was generally poor, especially for EPI vaccines introduced after 2008 or scheduled for administration at ≥12 months, with a maximum of 35.4% of children vaccinated according to schedule. Despite this, we found increasing trends in vaccination coverage and improvements in timeliness for EPI vaccines. However, for non-EPI vaccines, we found only moderate increases, and in some cases decreases, in vaccination coverage. This study demonstrates the success and improvement of the Chinese immunization program, but also highlights some challenges to be addressed. We recommend that future changes in vaccine practice and policy should primarily focus on improving coverage and timeliness of vaccines introduced after 2008, and/or scheduled for administration ≥12 months.http://dx.doi.org/10.1080/21645515.2020.1772620chinaruralchildrenvaccination coveragetimeliness |
| spellingShingle | Yangni He Yang Liu Bingbing Dai Liang Zhao Jiqun Lin Juan Yang Hongjie Yu Assessing vaccination coverage, timeliness, and its temporal variations among children in a rural area in China Human Vaccines & Immunotherapeutics china rural children vaccination coverage timeliness |
| title | Assessing vaccination coverage, timeliness, and its temporal variations among children in a rural area in China |
| title_full | Assessing vaccination coverage, timeliness, and its temporal variations among children in a rural area in China |
| title_fullStr | Assessing vaccination coverage, timeliness, and its temporal variations among children in a rural area in China |
| title_full_unstemmed | Assessing vaccination coverage, timeliness, and its temporal variations among children in a rural area in China |
| title_short | Assessing vaccination coverage, timeliness, and its temporal variations among children in a rural area in China |
| title_sort | assessing vaccination coverage timeliness and its temporal variations among children in a rural area in china |
| topic | china rural children vaccination coverage timeliness |
| url | http://dx.doi.org/10.1080/21645515.2020.1772620 |
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