Universidade Estadual Paulista, Faculdade de Medicina, Departamento de Especialidades Cirúrgicas e Anestesiologia, Divisão de Oftalmologia, Botucatu, São Paulo, Brazil.
Universidade Estadual Paulista, Instituto de Biociências, Departamento de Parasitologia, Botucatu, São Paulo, Brazil.
Rev Inst Med Trop Sao Paulo. 2021 Sep 3;63:e66. doi: 10.1590/S1678-9946202163066. eCollection 2021.
Trachoma is a keratoconjunctivitis caused by Chlamydia trachomatis, considered an important leading cause of preventable blindness in the world. This study aimed at verifying if flies can be the vectors for trachoma in our municipality. Flies were assessed in the households of children diagnosed with inflammatory trachoma at the municipality of Botucatu, Sao Paulo State, Brazil. Fly traps were placed in the backyard of the houses during 24 h, in each of the four weather seasons, over a period of one year. The collected dipterans were taxonomically classified and the presence of Chlamydia trachomatis in the flies was evidenced by using the Polymerase Chain Reaction (PCR). During the studied period, 2,188 flies were collected, mainly during the summer and the spring. The most common identified fly was Musca domestica. All fly samples were negative for Chlamydia trachomatis but several other different bacteria were identified in these flies. The authors concluded that flies are probably not the vectors for trachoma in the studied area. Further studies should be conducted to evaluate other possible factors responsible for the maintenance of the disease in our environment.
沙眼是由沙眼衣原体引起的一种角膜结膜炎，被认为是世界上导致可预防失明的一个重要主要原因。本研究旨在验证苍蝇是否可能是本地区沙眼的传播媒介。在巴西圣保罗州博图卡图市，对诊断患有炎症性沙眼的儿童的家庭中的苍蝇进行了评估。在一年的时间里，每个季节在房屋的后院放置 24 小时苍蝇诱捕器。收集到的双翅目昆虫进行了分类，并通过聚合酶链反应（PCR）来证明苍蝇中是否存在沙眼衣原体。在研究期间，共收集了 2188 只苍蝇，主要是在夏季和春季。最常见的苍蝇是家蝇。所有苍蝇样本均未检测到沙眼衣原体，但在这些苍蝇中还鉴定出了其他几种不同的细菌。作者得出结论，苍蝇可能不是研究地区沙眼的传播媒介。应开展进一步的研究，以评估我们环境中维持这种疾病的其他可能因素。
