Due to the scarce information about the epidemiological features of schistosomiasis in which the vector is Biomphalaria tenagophila, an investigation was carried in Pedro de Toledo in 1980 where such peculiarity is observed. Stool examinations (Kato-Katz method) were performed in 4,741 individuals (22.8% positive to Schistosoma mansoni eggs) of this 583 had previously received chemotherapy and ...

Freshwater snails in the family Bithyniidae are the first intermediate host for Southeast Asian liver fluke (Opisthorchis viverrini), the causative agent of opisthorchiasis. Unfortunately, the subtle morphological characters that differentiate species in this group are not easily discerned by non-specialists. This is a serious matter because the identification of bithyniid species is a fundamen...

A population of 420 snails Biomphalaria straminea, an intermediate host of Schistosoma mansoni, received gamma-rays obtained from a 60Co source in low-doses (0/2,5/5/7,5/10/15/20 and 25 Gy); half population was kept in colonies (allowing cross fertilization) and the other half was maintained in sexual isolation (allowing self fertilization). Results showed that 15 Gy stimulates the fertility of...

Schistosoma japonicum, the only schistosome species in the Philippines, was first described in 1906 among patients at the Philippines General Hospital and among inmates of a Manila prison [1]. In 1937, Onchomelania quadrasi was identified as the intermediate host of S. japonicum in the Philippines, and mapping projects to locate transmission sites commenced. Such studies revealed that schistoso...

SUMMARY Studies were made of the germinal development in the mother and daughter sporocysts of C. elephantis in experimental infections *of the snail intermediate host. A few infections of another species with a much larger cercaria also developed in the experimentally infected snails . Very rapid multiplication of the germinal cells takes place in the early stages of the mother sporocysts and ...

Remote sensing is a promising technique for monitoring the distribution and dynamics of various vector-borne diseases. In this study, we used the multi-temporal CBERS images, obtained free of charge, to predict the habitats of the snail Oncomelania hupensis, the sole intermediate host of schistosomiasis japonica, a snail-borne parasitic disease of considerable public health in China. Areas of s...

The snail Bithynia siamensis goniomphalos acts as the first intermediate host for the human liver fluke Opisthorchis viverrini, the major cause of cholangiocarcinoma (CCA) in Northeast Thailand. This data article contains the results obtained from the analysis of the proteins differentially expressed in the snail B. siamensis goniomphalos upon infection with O. viverrini. It contains the data g...

Eliminating human parasitic disease often requires interrupting complex transmission pathways. Even when drugs to treat people are available, disease control can be difficult if the parasite can persist in nonhuman hosts. Here, we show that restoration of a natural predator of a parasite's intermediate hosts may enhance drug-based schistosomiasis control. Our study site was the Senegal River Ba...

Freshwater snails of the genus Biomphalaria are important intermediate snail hosts for the widespread transmission of schistosomiasis in humans. This chronic and debilitating disease remains one of the most intractable public health concerns in 74 developing countries, infecting more than 200 million people. Prevalence of schistosomiasis is difficult to estimate, but according to the World Heal...

Schistosomiasis is an important parasitic disease, touching roughly 200 million people worldwide. The causative agents are different species. Schistosoma Schistosomes have a complex life cycle, with a freshwater snail as intermediate host. After infection, sporocysts develop inside the snail host and give rise to human dwelling larvae. We present here a detailed step-by-step video instruction i...