Bahia-Oliveira Lílian Maria Garcia, Jones Jeffrey L, Azevedo-Silva Juliana, Alves Cristiane C F, Oréfice Fernando, Addiss David G
Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, Rio de Janeiro, Brazil.
Emerg Infect Dis. 2003 Jan;9(1):55-62. doi: 10.3201/eid0901.020160.
In Campos dos Goytacazes, northern Rio de Janeiro state, Brazil, reports of uveitis consistent with toxoplasmosis led to a survey of the prevalence and risk factors for Toxoplasma gondii infection in 1997-1999. The survey population was selected randomly from schools, randomly chosen communities, and an army battalion. Serum samples from 1,436 persons were tested. With results adjusted for age, 84% of the population in the lower socioeconomic group was seropositive, compared with 62% and 23% of the middle and upper socioeconomic groups, respectively (p<0.001). When multivariate analysis was performed, drinking unfiltered water was found to increase the risk of seropositivity for the lower socioeconomic (odds ratio [OR]: 3.0, 95% confidence interval [CI] 1.3 to 6.9) and middle socioeconomic (OR: 1.7, 95% CI 1.2 to 2.3) populations. We also found a high T. gondii seroprevalence in this Brazilian community. Drinking unfiltered water increased the risk of T. gondii seropositivity, indicating the potential importance of oocyst transmission in water in this region.
在巴西里约热内卢州北部的坎波斯-杜斯戈伊塔卡泽斯，有关与弓形虫病相符的葡萄膜炎报告促使人们在1997年至1999年对弓形虫感染的患病率及危险因素进行了一项调查。调查人群是从学校、随机选取的社区以及一个军营中随机挑选出来的。对1436人的血清样本进行了检测。经年龄调整后的结果显示，社会经济地位较低群体中有84%的人血清呈阳性，相比之下，社会经济地位中等和较高群体的这一比例分别为62%和23%（p<0.001）。在进行多变量分析时，发现饮用未过滤的水会增加社会经济地位较低群体（优势比[OR]：3.0，95%置信区间[CI] 1.3至6.9）和社会经济地位中等群体（OR：1.7，95%CI 1.2至2.3）血清呈阳性的风险。我们还发现这个巴西社区的弓形虫血清阳性率很高。饮用未过滤的水会增加弓形虫血清呈阳性的风险，这表明该地区水中卵囊传播具有潜在重要性。
