Funding for this research was provided by:
National Key Research and Development Program of China (2016YFC1202000)
International Development Research Center (108100-001)
Text and Data Mining valid from 2018-12-01
Received: 15 April 2018
Accepted: 6 December 2018
First Online: 20 December 2018
Ethics approval and consent to participate
: This study received ethical approval from the Ethics Review Committee of the National Institute of Parasitic Diseases at the Chinese Center for Disease Control and Prevention, which gave permission to do the field investigation in Eryuan County. Authority to conduct the study was obtained from the county government in all areas investigated. County officers, township chiefs and other stakeholders were also consulted.
: Not applicable.
: The authors declare that they have no competing interests. It is declared that X-N Zhou is the Editor-in-Chief of the journal <i>Infectious Diseases of Poverty</i>.