宜蘭縣南澳鄉與南投縣仁愛鄉泰雅族原住民和當地動物弓蟲抗體之血清流行病學研究

In this study, latex agglutination test (LAT) was used to detect sera anti-toxoplasma antibodies of Atayal aborigines and local animals in Nanao district, Ilan county and Jen-ai district, Nantou county as a measure of exposure to the Toxoplasma gondii. Out of 422 Atayal aborigines and 64 different animals were tested in Nan-ao district and 82 Atayal children in Jen-ai district were also screened, the positive rates for sera anti-toxoplasma antibodies were 21.8%, 17.2% and 15.9%, respectively. In Nan-ao district, neither were the positive rates significantly different in males (22.1%) and females (21.4%), nor in humans (21.8%) and dogs (19.6%) (p＞0.05). The seroprevalence in adults (28.3%) was significantly higher than that in children (18.7%) (p＜0.05), and the highest seropositive rate (38.1%) was in the age group 50-59 years and the lowest (7.7%) was in the age group 1-9 years. In general, the age pattern of prevalence is consistent with increasing duration of exposure to Toxoplasma gondii with age. For animals, the seropositive rate in dogs (19.6%) was also significantly higher than that in wild rats (7.7%) (p＜0.05). No significant difference in seropositive rate of Atayal children was observed between Nan-ao and Jen-ai districts(p＞0.05)