Biomphalaria species distribution and its effect on human Schistosoma mansoni infection in an irrigated area used for rice cultivation in northeast Brazil

Moitinho Barboza, Delmany and Zhang, Cangjie and Cardoso Santos, Nathaly and Matos Bezerra Lemos Silva, Marília and Vieira Rollemberg, Carla Virgínia and Ramalho de Amorim, Fabio Jorge and Tiduko Ueta, Marlene and Moura de Melo, Claudia and Pacheco de Almeida, José Antônio and Sierpe Jeraldo, Verónica de Lourdes and Ribeiro de Jesus, Amélia (2012) Biomphalaria species distribution and its effect on human Schistosoma mansoni infection in an irrigated area used for rice cultivation in northeast Brazil. Geospatial health, 6 (3). S103-S 109. ISSN 1970-7096

Preview

PDF gh-v6i3-14-barboza.pdf - Published Version Download (287kB)

Abstract

The role of irrigated areas for the spread of schistosomiasis is of worldwide concern. The aim of the present study was to investigate the spatial distribution of the intermediate snail host Biomphalaria in an area highly endemic for schistosomiasis due to Schistosoma mansoni, evaluating the relationship between irrigation and types of natural water sources on one hand, and the influence of place and time of water exposure on the intensity of human infection on the other. A geographical information system (GIS) was used to map the distribution of the intermediate snail hosts in Ilha das Flores, Sergipe, Brazil, combined with a clinical/epidemiological survey. We observed a direct correlation between the intensity of human infection with S. mansoni and irrigation projects. Malacological studies to identify snail species and infection rates showed that B. glabrata is the main species responsible for human schistosomiasis in the municipality, but that B. straminea also plays a role. Our results provide evidence for a competitive selection between the two snail species in rice fields with a predominance of B. glabrata in irrigation systems and B. straminea in natural water sources.

Item Type:	Article
Uncontrolled Keywords:	Biomphalaria glabrata, Biomphalaria straminea, Schistosoma mansoni, geographical information system, irrigation, system, natural water sources, Brazil
Subjects:	600 Tecnologia - Scienze applicate > 610 Medicina e salute (Classificare qui la tecnologia dei servizi medici) > 616 Malattie (classificare qui la Clinica medica, la medicina basata sull'evidenza, la Medicina interna, la Medicina sperimentale) > 616.9 Altre malattie (altri rami della Medicina) > 616.96 Parassitosi, malattie causate da funghi (micosi) (classificare qui la Parassitologia medica) > 616.963 Malattie causate da trematodi (infezioni da trematodi) (include la schistosomiasi)
Depositing User:	Luca Tiberi
Date Deposited:	12 Sep 2019 09:51
Last Modified:	12 Sep 2019 09:51
URI:	http://eprints.bice.rm.cnr.it/id/eprint/6707

Actions (login required)

View Item