Abstract: Objective To explore the Methods of recruiting tuberculosis cases that reported by an internet-based surveillance system,and to enhance the case detection rate of tuberculosis cases.Methods With the fund from FIDELIS project(Fund for Innovative DOTS Expansion through Local Initiatives to Stop TB),a tracing system composed of county-town-village network in 50 project counties was set up,township smear-sputum-sites were established for patient’s convenience,and incentive mechanism was developed.5014 cases were traced by the surveillance system.The outcome of the tracing was compared between the project counties and other 50 non-project counties which traced 2746 cases.Results The following indicators were significantly higher in project counties than the non-project counties,including the tracing rate of cases(smear positive,smear negative or non-smear sputum) from surveillance system(P＜0.05),the arrival rate of the traced cases(smear positive,non-smear sputum)(P＜0.05).The smear positive rate of cases that retrieved by tracing was not significantly different between the two groups(P＞0.05).Conclusion A systemic tracing system of county-town-village network,township smear-sputum-sites and incentive mechanism can enhance the case detection rate of cases from internet-based surveillance system.

Key words: Pulmonary tuberculosis, Internet-based Surveillance System, Tracing