Figure 3.

Demographic characteristics of parasite-infected patients and the main routes of transmission. (A) Gender and age distribution of parasite-infected patients. Four hundred and twelve parasite-infected patients were categorized into nine different age groups. Male vs. female ratio was 1.48:1 with the age of 95% of patients ranging from 21 to 70. (B) Parasitic species with top six infections in different age groups. The prevalence of the top six parasitic infections showed a significant difference among different age groups (χ² = 64.1, df = 30, P < 0.001). The proportion of Paragonimus westermani infections declined with age, while Cysticercus infections presented an increasing trend with age. (C) Main routes of transmission among parasite-infected patients. Four major routes of transmission were concluded here (Figure 3C): unclean diets (46.03%, 190/412); traveling abroad (6.78%, 28/412); contacting infected water (2.10%, 9/412); raising animals (1.19%, 5/412); and unknown infective ways (43.93%, 181/412).