Dias J C
Departamento de Clínica Médica, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brasil.
Rev Soc Bras Med Trop. 1993 Apr-Jun;26(2):93-9. doi: 10.1590/s0037-86821993000200005.
Among 301 construction workers examined in Bambuí, Brasil, 11.6% presented positive serology for American trypanosomiasis, with a prevalence of 5.0% in the age group 17-29 years, 13.8% in the 30-39 and 39.4% in the 40-57. Electrocardiographic disturbances were detected in 31.3% of the seropositive and in 7.1% of the seronegative individuals, with a significant difference in the age group 40-57 years. Cardiac enlargement and esophagopathy were detected respectively in 8.6% and 8.6% of the positive and 1.5% and 0.8% of the negative group. Chagasic and non-Chagasic individuals came from the same region and social status, but the seropositive group was more associated with low scholarship and immediate antecedent of rural activities. The effectiveness of the programme of vector control installed in the Region in the years 1970 is once more confirmed by its positive impact on the prevalence and morbidity of human Chagas disease. Congenital and transfusional Chagas disease seem to play a very small epidemiologic role in the Region at the present time.
在巴西班布伊接受检查的301名建筑工人中，11.6%的人美洲锥虫病血清学检测呈阳性，其中17 - 29岁年龄组的患病率为5.0%，30 - 39岁年龄组为13.8%，40 - 57岁年龄组为39.4%。血清学阳性个体中31.3%检测到心电图异常，血清学阴性个体中7.1%检测到心电图异常，在40 - 57岁年龄组中有显著差异。心脏扩大和食管病变在阳性组中的检出率分别为8.6%和8.6%，在阴性组中分别为1.5%和0.8%。患恰加斯病和未患恰加斯病的个体来自同一地区且社会地位相同，但血清学阳性组与低学历和近期有农村活动经历的关联更大。1970年在该地区实施的病媒控制计划对人类恰加斯病的患病率和发病率产生了积极影响，再次证实了该计划的有效性。目前，先天性和输血性恰加斯病在该地区的流行病学作用似乎非常小。
