[Evolution and evaluation of schistosomiasis prevention and control institutions in China].

Schistosomiasis is one of a few endemic and infectious diseases, which are controlled by the specific prevention and control institutions in China. Through the review of historical data, this paper describes the construction, continuation and changes of schistosomiasis prevention and control institutions in different historical periods and systems, and analyzes and evaluates its historical function, contribution and status.

Maternal hepatitis B virus (HBV) DNA positivity and sexual intercourse are associated with HBV intrauterine transmission in China: a prospective case-control study.

Background And Aim: Hepatitis B virus (HBV) intrauterine transmission from infected mothers contributes significantly to the persistence of the high number of HBV carriers. The aim of this study was to identify potential risk factors for HBV intrauterine transmission.

Methods: A case-control study was performed on pregnant women tested positive for HBsAg at Shaanxi Maternal and Neonatal Health Hospital, Xi'an, China, from September 2002 to October 2004.

[Consistency analysis in the use of abdominal ultrasonography for diagnosing schistosomiasis japonica-related morbidity].

Objective: To explore the consistency among different indices of abdominal ultrasonography for the diagnosis of schistosomiasis japonica related morbidity and the best combination of the indices.

Methods: Six indices of abdominal ultrasonography were selected to investigate schistosomiasis related morbidity in residents in a village of Hunan Province, and the Kappa coefficients of diagnostic consistency among different indices and Cronbach's alpha coefficients of different combinations of indices were computed.

Results: The Kappa coefficients of 'liver parenchyma > or = grade II' with 'right midclavicular subcostal' and with 'portal vein diameter' were 0.