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Prevalence, behavioural and social factors associated with Schistosoma intercalatum and geohelminth infections in São Tomé and Principe.

A pilot study was conducted in schoolchildren from three main districts of São Tome to assess the relationship between the prevalence of infections caused by Schistosoma intercalatum or intestinal helminths and individual behaviour and social conditions. Coprological examination revealed an increase of schistosome infections and a persisting high endemicity for ascariasis and trichuriasis. Infection rates were 36.2% for S. intercalatum and 70.8%, 68.5% and 4.6% for Ascaris lumbricoides, Trichuris trichiura and Ancylostomidae, respectively. Out of the 47 children positive for S. intercalatum, 3

Knowledge attitudes and practices of grade three primary schoolchildren in relation to schistosomiasis, soil transmitted helminthiasis and malaria in Zimbabwe.

BACKGROUND: Helminth infection rates in grade three children are used as proxy indicators of community infection status and to guide treatment strategies in endemic areas. However knowledge, attitudes and practices (KAP) of this target age group (8-10 years) in relation to schistosomiasis, soil transmitted helminthiasis (STHs) and malaria is not known at a time when integrated plasmodium - helminth control strategies are being advocated. This study sought to assess KAP of grade 3 children in relation to schistosomiasis, STHs and malaria in order to establish an effective school based health ed

An anticoagulant peptide from the human hookworm, Ancylostoma duodenale that inhibits coagulation factors Xa and XIa.

A full-length cDNA encoding an anticoagulant peptide, named AduNAP4, was cloned and identified from the human hookworm Ancylostoma duodenale. AduNAP4 has 104 amino acids including a predicted 23-residue signal peptide and shows <or= 50% similarity with other known nematode anticoagulant protein/peptide (NAP). AduNAP4 is extremely efficient at prolonging the activated partial thromboplastin time, and is an inhibitor of both fXa (K(i)=7.34+/-1.74 nM) and fXIa (K(i)=42.45+/-3.25 nM). No fXIa inhibitor has previously been described from other blood-feeding animals. Our results suggest that hookwor

Diagnostic accuracy of Kato-Katz, FLOTAC, Baermann, and PCR methods for the detection of light-intensity hookworm and Strongyloides stercoralis infections in Tanzania.

Sensitive diagnostic tools are crucial for an accurate assessment of helminth infections in low-endemicity areas. We examined stool samples from Tanzanian individuals and compared the diagnostic accuracy of a real-time polymerase chain reaction (PCR) with the FLOTAC technique and the Kato-Katz method for hookworm and the Baermann method for Strongyloides stercoralis detection. Only FLOTAC had a higher sensitivity than the Kato-Katz method for hookworm diagnosis; the sensitivities of PCR and the Kato-Katz method were equal. PCR had a very low sensitivity for S. stercoralis detection. The cycle

How does academia respond to the burden of infectious and parasitic disease?

BackgroundAcademic research is one of the main avenues through which humans can fight the threat of infectious diseases. However, there have been concerns regarding whether the academic system has provided sufficient efforts to fight infectious diseases we potentially face. Answering these questions could contribute to evidence-based recommendations for setting research priorities and third-mission policies.MethodsWith a focus on one of the most common categories of communicable diseases, infectious and parasitic diseases (IPDs), we searched Web of Science for articles and reviews relevant to

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… nematode infections | (("fasciolosis" OR "fascioliasis" OR "distomatosis" OR "fasciola hepatica" OR "fasciola gigantica" OR "distomatosis") NOT "cattle") OR "dracunculiasis disease" OR "guinea-worm disease" OR "guinea worm disease" OR "dracunculus medinensis" OR "salmonella" OR "paratyphoid fever" OR "ancylostomiasis …

Biology and Diseases of Dogs

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