Ragaa E Hammad

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This study examined relationships between blood microfilaria (MF) counts and parasite uptake and maturation in Culex pipiens fed on Egyptian volunteers with bancroftian filariasis. Uptake of MF and production of infective larvae (L3) were more closely correlated with MF counts in finger prick blood than in venous blood. Only a minority of ingested MF(More)
Studies were conducted to compare early phenomena associated with W. bancrofti infection and further development in the filaria vector Culex pipiens and the refractory mosquito Aedes caspius. Ingestion rates evaluated immediately after simultaneous feeding on an infected human were 69.1% for 43 Cx. pipiens and 35.7% for 28 Ae. caspius. The observed number(More)
Focally endemic bancroftian filariasis is targeted for elimination in the Nile delta of Egypt. Improved methods are needed for identifying endemic villages to be included in the control programme and for monitoring its success. We have evaluated the performance of a polymerase chain reaction (PCR) assay in estimating Wuchereria bancrofti infection in pools(More)
We studied effects of combined diethylcarbamazine (DEC) and albendazole (ALB) treatment on Wuchereria bancrofti microfilaria (MF) uptake and development of infective larvae (L3) in Culex pipiens. Consenting Egyptian adults with microfilaremia (MF > 300/mL) were treated with one or seven daily doses of DEC/ALB. Laboratory-reared mosquitoes were fed on(More)
In the Nile Delta of Egypt, levels of W. bancrofti infection in humans vary among nearby villages. Ecological and entomological factors that might explain variability between adjacent villages, El Qolzom (QOL) and Kafr Shorafa (KSH) with respective 10.8% and 2.1% microfilaria (MF) prevalence were examined. The epidemiological study covered 127 and 79 houses(More)
  • R E Hammad
  • Journal of the Egyptian Society of Parasitology
  • 1997
The impact of moderate infection with Wuchereria bancrofti (Cobbold) (25 mf/50 microliters blood) on the biological activities of Culex pipiens L. were investigated. Data revealed that W. bancrofti parasites did not interfere significantly with the oviposition rate (81.97%, 80.228% in non-infected and infected mosquitoes, respectively), fecundity (73.56 +/-(More)
We compared the defense mechanisms directed against Wuchereria bancrofti by a filaria susceptible mosquito, Culex pipiens, and a refractory one, Aedes caspius. The reciprocal deleterious effects of both the mosquito host and its parasite are reported. Anatomical and histological examinations of mosquitoes revealed minor differences in the general structure(More)
Mosquitoes transmit a variety of pathogens that have devastating consequences for global public and veterinary health. Despite their capacity to serve as vectors, these insects have a robust capacity to respond to invading organisms with strong cellular and humoral immune responses. In Egypt, Aedes caspius (Pallas, 1771) has been suspected to act as a(More)
Mite predators on the house fly eggs were collected from manure in two slaughterhouses in Cairo and Giza for 2 successive years. Macrochelidae, Parasitidae and Uropodidae were generally collected in that order of abundance. Macrochelidae was represented by 3 species: M. mascaedomesticae (Scopoli), M. merdarius (Berlese) and Glyptholaspis confusa (Foa).(More)
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