Martínez-Maya José Juan, de Aluja Aline S, Avila-Ramírez Guillermina, Aguilar-Vega Laura, Plancarte-Crespo Agustín, Jaramillo-Arango Carlos Julio
Departamento de Medicina Preventiva y Salud Pública, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, México, D.F., México.
Salud Publica Mex. 2003 Mar-Apr;45(2):84-9.
To assess the frequency of Taenia solium carriers and its relationship with human cysticercosis in a Mexican locality.
A cross-sectional study was conducted in 1998, in a locality of Guerrero State, Mexico. Four hundred and three fecal samples were analyzed by enzyme-linked immunosorbent assay (ELISA) to detect Taenia sp coproantigen. Ninety two serum samples were also analyzed for antibodies against cisticerci using the immunoelectrotransfer blot assay (IET). Data were analyzed using descriptive statistics and odds ratios.
Five of the 403 fecal samples were positive (1.2%). The adult cestode was recovered in only two people. Three (3.26%) out of the 92 serum samples that were analyzed for anticysticercus antibodies were positive. Seventeen serum samples corresponded to people living with a person positive to the coproantigen test (first group), the remaining 75 were obtained from people without a history of releasing taenia proglottids (second group). In the first group, 2 positive sera were detected (11.8%), while in the second only I was positive (1.3%) (odds ratio = 9.87, 95% confidence interval 0.64 to 295.56, p = 0.08).
The difficulty to obtain the adult parasite in persons positive to coproantigens, may be due to difficult expulsion, a shorter permanence of the parasite in the host, insufficient dosage of treatment, or to lack of specificity of the diagnostic test. Further studies are needed to evaluate these possibilities; a better knowledge of parasite transmission dynamics will allow the implementation of prevention and control measures and a better assessment of diagnostic tests under field conditions. The English version of this paper is available at: http://www.insp.mx/salud/index.html.
评估墨西哥某地区猪带绦虫携带者的频率及其与人体囊尾蚴病的关系。
1998年在墨西哥格雷罗州的一个地区进行了一项横断面研究。通过酶联免疫吸附测定（ELISA）分析了403份粪便样本，以检测带绦虫属粪抗原。还使用免疫电转移印迹测定（IET）分析了92份血清样本中的抗囊尾蚴抗体。使用描述性统计和比值比分析数据。
403份粪便样本中有5份呈阳性（1.2%）。仅在两人体内发现了成虫绦虫。在分析抗囊尾蚴抗体的92份血清样本中，有3份（3.26%）呈阳性。17份血清样本来自与粪抗原检测呈阳性的人生活在一起的人（第一组），其余75份来自没有排出绦虫节片病史的人（第二组）。在第一组中，检测到2份阳性血清（11.8%），而在第二组中仅1份呈阳性（1.3%）（比值比=9.87，95%置信区间0.64至295.56，p=0.08）。
粪抗原检测呈阳性的人难以获得成虫寄生虫，可能是由于排出困难、寄生虫在宿主体内的停留时间较短、治疗剂量不足或诊断测试缺乏特异性。需要进一步研究来评估这些可能性；更好地了解寄生虫传播动态将有助于实施预防和控制措施，并在现场条件下更好地评估诊断测试。本文的英文版本可在以下网址获取：http://www.insp.mx/salud/index.html。
