Primeiros casos autóctones de esquistossomose mansoni em região do Noroeste do Estado de Minas Gerais (Brasil)

Abstract

São relatados os primeiros casos autóctones de esquistossomose mansoni, originários da cidade de Paracatu, Noroeste do Estado de Minas Gerais, Brasil, região até o momento considerrada indene para esta parasitose. Trata-se de oito pacientes com idade entre 12 e 14 anos, e que nunca haviam se ausentado da localidade. Os levantamentos malacológicos proporcionaram a coleta de 11.471 exemplares de Biomphalaria straminea, todos negativos para Schistosoma mansoni. Foram sugeridas medidas que, se colocadas em prática, poderiam controlar a parasitose na cidade.

A geoprocessing approach for studying and controlling schistosomiasis in the state of Minas Gerais, Brazil

“…Schistosomiasis is facilitated by the presence of susceptible intermediate host mollusks of the Biomphalaria genus. The snail fauna of the genus Biomphalaria in the state of Minas Gerais (MG) are represented by seven species: Biomphalaria glabrata, Biomphalaria straminea, Biomphalaria tenagophila, Biomphalaria peregrina, Biomphalaria schrammi, Biomphalaria intermedia and Biomphalaria occidentalis (Katz & Carvalho 1983, Carvalho et al 1987, 1988, 1989, 1994, 1997, 1998. In Brazil, there are three species of Biomphalaria (B. glabrata, B. tenagophila and B. straminea) that are naturally infected by Schistosoma mansoni.…”

“…B. tenagophila is naturally infected by S. mansoni in MG and it is responsible for the maintenance of disease foci in the city of Itajubá (Katz & Carvalho 1983). B. straminea, although never found to be infected in MG, was considered responsible for the schistosomiasis focus in Paracatu (MG) (Carvalho et al 1988).…”

Changes in energetic metabolism of Biomphalaria glabrata (Mollusca, Planorbidae) in response to exogenous calcium

“…Snails are good bioindicators of contamination of freshwater environments (Cantinha et al, 2010;Carvalho et al, 1988), as they are sensitive to environmental alterations, such as chemical elements dissolved in the water, hydrography, soil composition, climate and physical geography (Abílio et al, 2007;Guerino et al, 2009). Chemical elements such as calcium, copper, iron, zinc and manganese are essential to the metabolism of such organisms (Barbosa and Barbosa, 1994).…”

Evaluation of a linear spectral mixture model and vegetation indices (NDVI and EVI) in a study of schistosomiasis mansoni and Biomphalaria glabrata distribution in the state of Minas Gerais, Brazil

“…The extensive distribution of these intermediate hosts in Minas Gerais (MG), Brazil, results in the wide-ranging distribution of schistosomiasis, which is now commonly found in non-endemic areas (Katz & Carvalho 1983, Carvalho et al 1988. The disease is known to be endemic in the regions north (zone of Médio São Francisco and Itacambira), oriental and central (zone of Alto Jequitinhonha, Oeste, Alto São Francisco and Metalúr-gica).…”