Basualdo Juan A, Córdoba María A, de Luca María M, Ciarmela María L, Pezzani Betina C, Grenovero María S, Minvielle Marta C
Cátedra de Microbiología y Parasitología, Facultad de Ciencias Médicas, Universidad Nacional de La Plata, La Plata, Argentina.
Rev Inst Med Trop Sao Paulo. 2007 Jul-Aug;49(4):251-5. doi: 10.1590/s0036-46652007000400011.
We evaluate the prevalence of intestinal parasites in 504 people and the degree of association between environmental variables and parasites found in population, soil and water in a rural area of Argentina during 2002-2003. A structured survey was used to evaluate the environmental variables and fecal-human, soil and water samples were analyzed. The prevalence of parasites was 45.4%. Most prevalent protozoa were Blastocystis hominis (27.2%) and Giardia lamblia (6.9%), while the most prevalent helminth was Ascaris lumbricoides (3.8%). The analyzed environmental variables showing association (p < 0.05) with presence of parasites in population were: cardboard-tin or wooden house, dirt floor, home or communal water pump, faucet outside the house or public faucet and cesspool or latrine. Parasite forms were found in 82.3% of the soil samples and in 84.2% of the water samples. In both samples we found parasites that were also found in people. In this study we have found deficient sanitary conditions associated with presence of parasites in population and we have evidenced that contaminated soil and water were the source of these parasites.
2002年至2003年期间，我们对阿根廷某农村地区的504人进行了肠道寄生虫患病率评估，并分析了环境变量与人群、土壤和水中发现的寄生虫之间的关联程度。采用结构化调查评估环境变量，并对人类粪便、土壤和水样进行分析。寄生虫患病率为45.4%。最常见的原生动物是结肠小袋纤毛虫（27.2%）和蓝氏贾第鞭毛虫（6.9%），而最常见的蠕虫是蛔虫（3.8%）。分析显示与人群中寄生虫存在有关联（p<0.05）的环境变量有：纸板-铁皮或木屋、泥土地面、家庭或公共水泵、屋外水龙头或公共水龙头以及化粪池或厕所。在82.3%的土壤样本和84.2%的水样中发现了寄生虫形态。在这两种样本中，我们都发现了在人体中也存在的寄生虫。在本研究中，我们发现卫生条件差与人群中寄生虫的存在有关，并且证明受污染的土壤和水是这些寄生虫的来源。
