Córdoba Lanus Elizabeth, Salomón Oscar Daniel
Instituto Superior de Entomología 'Dr. Abaham Willink', Facultad de Ciencias Naturales, Universidad Nacional de Tucumán, Tucumán, Argentina.
Rev Inst Med Trop Sao Paulo. 2002 Jan-Feb;44(1):23-7. doi: 10.1590/s0036-46652002000100005.
American Tegumentary Leishmaniasis is endemic in the province of Tucumán since 1916 where the first Argentinian case of leishmaniasis was reported. An epidemic outbreak took place in the province during 1986-1988, after that the number of cases increased gradually again between 1991-1996. Since October of 1999 sand flies captures were performed at different places associated with current and past transmission or sites identified as risky ones. The collections were carried out with CDC mini light trap and modified Shannon trap. In this study 2338 Phlebotominae were captured being prevalent Lutzomyia neivai (Lu intermedia complex) (97.7%), followed by Lu. migonei. We report Lu. shannoni for the first time in the province. Phlebotominae was abundant in the warm and humid months and showed a peak before the summer rains. Lutzomyia neivai showed a pattern (peridomestic prevalence, anthropophilia, abundance in secondary forest) consistent with other outbreak studies. Thus, the results reinforce this species incrimination as vector of leishmaniasis in the area. Domestic animals close to houses increase its abundance, and so the probable associated risk of human-Phlebotominae contact. Further studies should be done to understand the role of each Phlebotominae species in the transmission of leishmaniasis in Tucumán in order to design entomological surveillance strategies.
自1916年阿根廷首例利什曼病病例在图库曼省被报告以来，美洲皮肤利什曼病就在该省流行。1986 - 1988年该省发生了一次疫情爆发，之后在1991 - 1996年间病例数再次逐渐增加。自1999年10月起，在与当前和过去传播相关的不同地点或被确定为危险的地点进行了白蛉捕捉。捕捉工作使用了疾控中心微型诱虫灯和改良的香农诱捕器。在本研究中，共捕获2338只白蛉，其中最常见的是内瓦罗蛉（中间罗蛉复合体）（97.7%），其次是米氏罗蛉。我们首次在该省报告了香农罗蛉。白蛉在温暖潮湿的月份数量丰富，并在夏季降雨前出现一个高峰。内瓦罗蛉呈现出一种模式（家周流行、嗜人习性、在次生林中数量丰富），与其他疫情研究一致。因此，这些结果进一步证明该物种是该地区利什曼病的传播媒介。靠近房屋的家畜增加了其数量，从而增加了人与白蛉接触的潜在相关风险。为了设计昆虫学监测策略，应进一步开展研究以了解图库曼省每种白蛉在利什曼病传播中的作用。
