[Analysis of influencing factors of Trichuris trichiura infection in demonstration plots of comprehensive control of parasitic diseases].

Objective: To understand the main risk factors of Trichuris trichiura infection in plots carrying out the integrated control of parasitic diseases.

Methods: The simple and multiple unconditional logistic regression were applied to analyze related data from the database of baseline survey in demonstration plots carrying out the integrated control of parasitic diseases.

Results: The results of simple logistic regression analysis suggested that the effects of 7 factors to Trichuris trichiura infection were significant (all P values were less than 0.05), namely drinking water resources, toilet type, fertilization type of farmland, fertilization type of vegetable field, washing hands after defecation, eating raw vegetables, melons and fruits and taking anthelminthic before examination. Among the factors above, eating raw vegetables, melons and fruits was of high risk (OR = 2.302), washing hands after defecation and taking anthelminthic before examination were two protection factors (with OR of 0.904 and 0.664, respectively). Compared to feces of human and livestock, fertilizing chemical fertilizer and compound fertilizer in farmland and vegetable field showed more obvious protection effect (with OR of 0.864 and 0.854, respectively). Drinking well water and spring water were two protection factors (with OR of 0.843 and 0.567, respectively). Simple toilet indoor and biogas pool also showed protection effect (with OR of 0.576 and 0.687, respectively). Multivariate analysis showed that four factors including eating raw vegetables, melons and fruits, fertilization type of farmland, fertilization type of vegetable field and taking anthelminthic before examination were determined to be the main influencing factors of Trichuris trichiura infection.

Conclusions: The main influencing factors of Trichuris trichiura infection in demonstration plots for the integrated control of parasitic diseases include eating raw vegetables, melons and fruits and fertilization type of farmland and vegetable field. Besides those, taking anthelminthic could reduce Trichuris trichiura infection of the population, meanwhile, sanitary water supply and latrine improvement could also reduce the risk of infection.