A study on the reinfection and infection rates of soil-transmitted helminths was conducted in Kemiri Sewu, Godean District, Sleman Regency, Yogyakarta Special Province, Indonesia, from August 1988 to June 1990. A total 61 individuals rendered Ascaris lumbricoides egg-negative by drug treatment were used in the reinfection study and 412 individuals found negative for Ascaris eggs in the pretreat...

The genus Eumolpianus Smit, 1983, a group of fleas infesting chipmunks mostly in western North America, is reviewed. Its host preferences and distribution are discussed and the relationships of the 7 currently recognized species are examined. It is concluded that E. eumolpi americanus (Hubbard, 1950) is a junior synonym of the nominate species. Although not formally synonymized, it is postulate...

The taxonomy of the genus Platypygus Loew is summarized, previously described species are reviewed based on examination of types, and a key to known species of the genus worldwide is presented. All previously described species are diagnosed and illustrated. The male genitalia of P. ridibundus (Costa) and female genitalia of P. americanus Melander are described for the first time. Some character...

Winter flounder (Pseudopleuronectes americanus) once supported robust commercial and recreational fisheries in the New York (USA) region, but since the 1990s populations have been in decline. Available data show that settlement of young-of-the-year winter flounder has not declined as sharply as adult abundance, suggesting that juveniles are experiencing higher mortality following settlement. Th...

Hookworms (Ancylostoma duodenale and Necator americanus) are blood-feeding intestinal nematodes that infect approximately 700 million people worldwide. To further our understanding of the systems metabolic response of the mammalian host to hookworm infection, we employed a metabolic profiling strategy involving the combination of (1)H NMR spectroscopic analysis of urine and serum and multivaria...

BACKGROUND Few effective drugs are available for soil-transmitted helminthiases and drug resistance is of concern. In the present work, we tested the efficacy of the veterinary drug monepantel, a potential drug development candidate compared to standard drugs in vitro and in parasite-rodent models of relevance to human soil-transmitted helminthiases. METHODOLOGY A motility assay was used to a...

BACKGROUND The diagnosis of soil-transmitted helminths (STHs; Ascaris, Trichuris and hookworms) is traditionally based on the demonstration of eggs in stool using microscopic techniques. While molecular techniques are more appropriate to speciate STH species they are seldom applied. In this study we speciated STH eggs from stool using molecular techniques to gain insights into the distribution ...

BACKGROUND The hookworms, Ancylostoma duodenale and Necator americanus, cause significant gastrointestinal blood loss. In clinical studies, greater blood losses have been reported with A. duodenale. However, there has been no evidence that endemic A. duodenale infection has greater impact than N. americanus infection on the iron status of populations. METHODS In a sample of 525 school childre...