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Journal of epidemiology · Jul 2017
Timeliness and completeness of measles vaccination among children in rural areas of Guangxi, China: A stratified three-stage cluster survey.
- Xianyan Tang, Alan Geater, Edward McNeil, Hongxia Zhou, Qiuyun Deng, and Aihu Dong.
- Department of Epidemiology & Biostatistics, School of Public Health, Guangxi Medical University, Guangxi Zhuang Autonomous Region, China; Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, Hat Yai, Thailand.
- J Epidemiol. 2017 Jul 1; 27 (7): 317-324.
BackgroundLarge-scale outbreaks of measles occurred in 2013 and 2014 in rural Guangxi, a region in Southwest China with high coverage for measles-containing vaccine (MCV). This study aimed to estimate the timely vaccination coverage, the timely-and-complete vaccination coverage, and the median delay period for MCV among children aged 18-54 months in rural Guangxi.MethodsBased on quartiles of measles incidence during 2011-2013, a stratified three-stage cluster survey was conducted from June through August 2015. Using weighted estimation and finite population correction, vaccination coverage and 95% confidence intervals (CIs) were calculated. Weighted Kaplan-Meier analyses were used to estimate the median delay periods for the first (MCV1) and second (MCV2) doses of the vaccine.ResultsA total of 1216 children were surveyed. The timely vaccination coverage rate was 58.4% (95% CI, 54.9%-62.0%) for MCV1, and 76.9% (95% CI, 73.6%-80.0%) for MCV2. The timely-and-complete vaccination coverage rate was 47.4% (95% CI, 44.0%-51.0%). The median delay period was 32 (95% CI, 27-38) days for MCV1, and 159 (95% CI, 118-195) days for MCV2.ConclusionsThe timeliness and completeness of measles vaccination was low, and the median delay period was long among children in rural Guangxi. Incorporating the timeliness and completeness into official routine vaccination coverage statistics may help appraise the coverage of vaccination in China.Copyright © 2017 The Authors. Production and hosting by Elsevier B.V. All rights reserved.
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