Individual exposure to Simulium bites and intensity of Onchocerca volvulus infection
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چکیده
منابع مشابه
Development of Onchocerca volvulus larvae in Simulium pintoi in the Amazonas region of Venezuela.
The intake and development of Onchocerca volvulus in Simulium pintoi from the Parima mountain region of the Federal Territory of Amazonas in Venezuela, were studied experimentally. When wild females fed on the lower half of the legs and lower third of the back of an onchocerciasis patient harboring 23 and 264 microfilariae per skin snip, respectively, at each site, an average (median) of 14 (ra...
متن کاملAttempts to establish Onchocerca volvulus infection in primates and small laboratory animals.
Attempts were made to transmit O. volvulus infection to small laboratory animals and several species of primates to identify a practical laboratory host for human onchocerciasis. Infective larvae of O. volvulus of Guatemalan origin were inoculated into the following animals: rhesus monkeys, bonnet monkeys, golden spider monkeys, black spider monkeys, galagos, opossums, jirds, newborn and adult ...
متن کاملSeasonal Variation in Biting Rates of Simulium damnosum sensu lato, Vector of Onchocerca volvulus, in Two Sudanese Foci
BACKGROUND The abundance of onchocerciasis vectors affects the epidemiology of disease in Sudan, therefore, studies of vector dynamics are crucial for onchocerciasis control/elimination programs. This study aims to compare the relative abundance, monthly biting-rates (MBR) and hourly-based distribution of onchocerciasis vectors in Abu-Hamed and Galabat foci. These seasonally-based factors can b...
متن کاملDevelopment of Onchocerca volvulus (Filarioidea: Onchocercidae) in the West African black fly Simulium yahense (Diptera: Simuliidae) in Liberia.
Simulium yahense black flies infected with microfilaria of Onchocerca volvulus were kept in a defined insectary environment in Liberia, West Africa. A daily sample of infected flies was dissected for larvae developing in the thoracic muscles and examined for growth in stadial development. Microfilariae ingested by black flies transformed to the L1 larval stage without molting. Successive larval...
متن کاملA Simple Isothermal DNA Amplification Method to Screen Black Flies for Onchocerca volvulus Infection
Onchocerciasis is a debilitating neglected tropical disease caused by infection with the filarial parasite Onchocerca volvulus. Adult worms live in subcutaneous tissues and produce large numbers of microfilariae that migrate to the skin and eyes. The disease is spread by black flies of the genus Simulium following ingestion of microfilariae that develop into infective stage larvae in the insect...
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ژورنال
عنوان ژورنال: Parasites & Vectors
سال: 2010
ISSN: 1756-3305
DOI: 10.1186/1756-3305-3-53