Barbosa C S, Pieri O S, da Silva C B, Barbosa F S
Departamento de Parasitologia, Centro de Pesquisas Aggeu Magalhães, FIOCRUZ, Recife, PE, Brasil.
Rev Saude Publica. 2000 Aug;34(4):337-41. doi: 10.1590/s0034-89102000000400004.
In 1988, 22 autochthonous cases from accidental exposure were registered in Forte Orange beach, Itamaracá Island, Pernambuco, Brazil. All cases occurred in middle-to-upper class individuals who were vacationing in the island. After the cases were identified, the major objective was to find breeding sites of schistosomiasis vectors and correlate the biological factors with the environmental conditions.
The environmental characteristics of the beach before human occupation were obtained from several documents. Also, a one-year malacological survey was conducted with monthly collection of mollusks, and the determination of their infectivity rates.
RESULTS/CONCLUSIONS: The malacological survey was able to identify 20 breeding sites of Biomphalaria glabrata and 28 capture station were set up. Snails were collected and examined each month throughout a whole year. The results show a seasonal variation in the mollusk population density associated with infection rates and types of breeding sites. The importance of this new epidemiological profile of schistosomiasis in the State of Pernambuco relies on the fact that it can be related with the drastic human interference on the environment. Ecological, environmental, and demographic factors as well as the epidemiological characteristics of the disease have social and economic repercussions.
1988年，巴西伯南布哥州伊塔马拉卡岛的福尔蒂奥兰治海滩记录了22例因意外接触导致的本地血吸虫病病例。所有病例均发生在该岛度假的中上层阶级人群中。病例确诊后，主要目标是寻找血吸虫病传播媒介的滋生地，并将生物学因素与环境条件相关联。
通过几份文件获取了该海滩在人类占据之前的环境特征。此外，还进行了为期一年的贝类学调查，每月收集软体动物并测定其感染率。
结果/结论：贝类学调查能够确定20个光滑双脐螺的滋生地，并设立了28个捕获站。全年每月收集并检查蜗牛。结果显示，软体动物种群密度存在季节性变化，与感染率和滋生地类型相关。伯南布哥州这种新的血吸虫病流行病学特征的重要性在于，它可能与人类对环境的严重干扰有关。生态、环境和人口因素以及该疾病的流行病学特征具有社会和经济影响。
