[Distribution of food-borne parasitic diseases and dietary habits in human population in Guangxi].

Objective: To investigate the distribution of common food-borne parasitic diseases and dietary habits in Guangxi.

Methods: In the survey from 2002 to 2005, questionnairing, fecal examination, ELISA or skin test were applied in the endemic areas of clonorchiasis, taeniasis, cysticercosis, trichinelliasis or paragonimiasis in Guangxi Zhuang Autonomous Region. 13 990 residents at 27 sites in 9 counties were examined for clonorchiasis, 22772 residents at 22 sites in 10 counties for taeniasis, 9 638 residents at 20 sites in 10 counties for trichinelliasis and 9 347 residents at 18 sites in 6 counties for paragonimiasis.

[Discovery of a residual focus of bancroftian filariasis after declaration of its transmission interruption in Guangxi].

Objective: To describe the discovery of a residual foci of bancroftian filariasis in Fuchuan County where the disease was announced to have been eliminated, and reveal its epidemiologic feature.

Methods: The investigation was carried out from August 2007 to March 2008 among residents in Changtang village where the first case of filariasis was found and the neighboring villages. They were screened with two thick blood smears.

[Study on 5S rDNA sequence of two isolates of Trichinella from Guangxi].

Objective: To analyze 5S ribosomal DNA (5S rDNA) sequences of two Trichinella isolates from Guangxi.

Methods: The fragments of 5S rDNA were obtained by PCR from the isolates of Debao and Nandan, and sequencing was made for the PCR products. Homogeneity, genetic distance matrix and phylogenetic tree were analyzed by related software.