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  • Title: Bancroftian filariasis in two urban areas of Recife, Brasil: the role of individual risk factors.
    Author: de Albuquerque Mde F, Marzochi MC, Ximenes RA, Braga MC, Silva MC, Furtado AF.
    Journal: Rev Inst Med Trop Sao Paulo; 1995; 37(3):225-33. PubMed ID: 8525268.
    Abstract:
    Bancroftian filariasis is spreading in towns of endemic areas in Recife, northeastern Brazil, where it is a major public health problem. This paper deals with the prevalence of microfilaraemia and filarial disease in two urban areas of Recife, studying their association with individual characteristics and variables related to the exposure to the vectors. The parasitologic survey was performed through a "door-to-door" census and microfilaraemia was examined by the thick-drop technique using 45 microliters of peripheral blood collected between 20:00 and 24:00 o'clock. 2,863 individuals aged between 5 and 65 years were interviewed and submitted to clinical examination. Males aged between 15 and 44 years old presented the greatest risk of being microfilaraemic. Microfilaraemia was also significantly associated with no use of bednet to sleep. The risk of being microfilaraemic was greater among those who had lived in the studied areas for more than 5 years. The overall disease prevalence was 6.3%. Males presented the greatest risk of developing acute disease. The risk of developing chronic manifestations was also greater among males and increased with age. We found no association between time of residence, bednet use, microfilaraemia and acute and chronic disease. We may conclude that in endemic areas there are subgroups of individuals who has a higher risk of being microfilariae carriers due to different behaviours in relation to vector contact.
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