About the Authors

Yihong Xie

Contributed equally to this work with: Yihong Xie, Yi Tan

wallstreetxie@hotmail.com (YX); cvirasak@gmail.com (VC)

‡ These authors are co-first authors on this work.

Affiliation Acute Infectious Disease Prevention and Control, Guangxi Zhuang Autonomous Region Center for Disease Prevention and Control, Nanning, Guangxi, China

Yi Tan

Contributed equally to this work with: Yihong Xie, Yi Tan

‡ These authors are co-first authors on this work.

Affiliation Acute Infectious Disease Prevention and Control, Guangxi Zhuang Autonomous Region Center for Disease Prevention and Control, Nanning, Guangxi, China

Virasakdi Chongsuvivatwong

wallstreetxie@hotmail.com (YX); cvirasak@gmail.com (VC)

Affiliation Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, HatYai, Songkla, Thailand

Xinghua Wu

Affiliation Acute Infectious Disease Prevention and Control, Guangxi Zhuang Autonomous Region Center for Disease Prevention and Control, Nanning, Guangxi, China

Fuyin Bi

Affiliation Acute Infectious Disease Prevention and Control, Guangxi Zhuang Autonomous Region Center for Disease Prevention and Control, Nanning, Guangxi, China

Stephen C. Hadler

Affiliation Division of Bacterial Disease, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Chuleeporn Jiraphongsa

Affiliation International Field Epidemiology Training Program (IFETP), Bureau of Epidemiology, Ministry of Public Health, Bangkok, Thailand

Vorasith Sornsrivichai

Affiliation Epidemiology Unit, Faculty of Medicine, Prince of Songkla University, HatYai, Songkla, Thailand

Mei Lin

Affiliation Acute Infectious Disease Prevention and Control, Guangxi Zhuang Autonomous Region Center for Disease Prevention and Control, Nanning, Guangxi, China

Yi Quan

Affiliation Acute Infectious Disease Prevention and Control, Guangxi Zhuang Autonomous Region Center for Disease Prevention and Control, Nanning, Guangxi, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YX YT XW SH ML YQ. Performed the experiments: YX YT XW SH ML YQ. Analyzed the data: YX VC SH CJ VS. Contributed reagents/materials/analysis tools: YX YT VC FB SH CJ VS ML YQ. Wrote the paper: YX YT VC XW SH CJ VS. Designed the software used in analysis: YX VC.