About the Authors

Jiangrong Li

Roles Formal analysis, Resources, Writing – original draft

Affiliation Expanded Program on Immunization Department, Yunnan Provincial Center for Disease Control and Prevention, Kunming, China

Wenzhou Yu

Roles Supervision

Affiliation National Immunization Program, Chinese Center for Disease Control and Prevention, Beijing, China

Zhixian Zhao

Roles Data curation, Methodology

Affiliation Expanded Program on Immunization Department, Yunnan Provincial Center for Disease Control and Prevention, Kunming, China

Lei Zhang

Roles Data curation

Affiliation Zhaotong Vocational College of Health, Zhaotong, China

Qiongyu Gong

Roles Conceptualization, Funding acquisition, Supervision, Writing – review & editing

232442623@qq.com

Affiliation Expanded Program on Immunization Department, Yunnan Provincial Center for Disease Control and Prevention, Kunming, China

Competing Interests

The authors have declared that no competing interests exist.