Estudo da suscetibilidade da Biomphalaria glabrata de Ourinhos (SP), à infecção pelo Schistosoma mansoni de Belo Horizonte (MG), e de São José dos Campos (SP)

Magalhães, Luiz Augusto; Dias, Luiz Cândido de Souza

doi:10.1590/s0034-89101973000300011

Cited by 6 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Desde então, sabia-se que a espécie predominante, B. glabrata, era altamente suscetível ao S. mansoni (Magalhães & Dias 1973). Estudos posteriores mostravam que a predominância de B. glabrata implicava na baixa freqüência de B. tenagophila, supostamente por exclusão competitiva (Kawazoe et al 1980).…”

Section: Resultsunclassified

Distribuição e diversidade de espécies do gênero Biomphalaria em microrregiões localizadas no Médio Paranapanema, São Paulo, SP, Brasil

Tuan

2009

Biota Neotrop.

View full text Add to dashboard Cite

TUAN, R. 2009. Diversity and distribution of the Biomphalaria species in the middle reaches of the Paranapanema River, São Paulo, SP, Brazil. Biota Neotrop. 9(1): http://www.biotaneotropica.org.br/v9n1/en/ abstract?short-communication+bn03009012009. Abstract:The predominant landscape in the studied region, composed by the Paranapanema and Pardo rivers, has been significantly affected by human interference in order to create extensive artificial irrigation ditches for agriculture. These environments are subject to drastic variations in water supply whereby draughts are created what bears a drastic populational fluctuation. The composition of schistosomiasis-associated planorbid fauna in Ourinhos and Ipauçu herein presented corroborate previous malacological surveys, which incriminates Biomphalaria. glabrata (Say, 1818) as the predominant species mainly at the Ourinhos micro-regions. At this site the snail distribution might be linked to the composition of deposited sediments in the hydrographic basin. Data from Ipauçu, a collection site that is only 30 km from Ourinhos, indicates absence of B. glabrata, and predominance of B. tenagophila (Orbigny, 1835

show abstract

Section: Resultsunclassified

Distribuição e diversidade de espécies do gênero Biomphalaria em microrregiões localizadas no Médio Paranapanema, São Paulo, SP, Brasil

Tuan

2009

Biota Neotrop.

View full text Add to dashboard Cite

show abstract

“…The detection of the high-risk spatial cluster of schistosomiasis in the Christoni stream and the fact that this stream is still colonized by B. glabrata 27,65,66,67 , may characterize this stream as a transmission hotspot in Ourinhos. It is known that this IH species is best adapted to the development and propagation of the parasite 29,68 . The flow map of imported cases demonstrates that Ourinhos is also an important nucleus for the regional dispersion of the disease.…”

Section: Discussionmentioning

confidence: 99%

“…24,25,26,27 This species was found naturally infected with Sm for the first time in 1952 in Ourinhos. 28,29 It has since been considered an important public health problem in this area of the state 30,31 . However, in this region, as in Brazil as a whole and several other countries of the world, recently, there has been a significant decrease in the incidence and prevalence of schistosomiasis, which has been attributed to the efficacy of the drugs used for treatment of infected individuals, increase in the coverage of basic sanitation services, and control of the IH 32,33,34,35 .…”

Section: Introductionmentioning

confidence: 99%

Schistosomiasis in the Middle Paranapanema river region, state of São Paulo, Brazil: Does it matter today for public health?

Palasio

Bortoleto

Rosa-Xavier

et al. 2019

Rev. Soc. Bras. Med. Trop.

View full text Add to dashboard Cite

Introduction: The Middle Paranapanema watershed is known for the transmission of schistosomiasis, and there have been autochthonous cases since 1952. This study aimed to describe this disease in space and time and evaluate its current importance as a public health problem. Methods: Thematic maps showing the risk areas for transmission of schistosomiasis, using scan statistics, and flow maps were created in the period 1978-2016. Incidence was calculated, and the existence of spatial dependence between autochthonous and imported cases was evaluated using Ripley's K12-function. Species of snails were identified in high-risk clusters. Results: A total of 1,511 autochthonous cases were reported in eight of the 25 municipalities in the study area, of which 92.8% occurred in Ourinhos. A total of 2,189 imported cases were reported (27% in Ourinhos and 20% in Assis), mainly originating in the states of Paraná and Minas Gerais. Clusters of autochthonous and imported cases with higher risk were identified in Ourinhos, Assis and Ipaussu. However, over the years, the cases began to occur in low density in Ourinhos and no longer in other municipalities in the region. The cluster detected in the period 2007-2016 in Ourinhos still has risk for the transmission of schistosomiasis. K12-function analysis indicated positive spatial dependence between autochthonous and imported cases. Conclusions: The study showed that, currently, schistosomiasis as a public health problem in Middle Paranapanema is restricted to Ourinhos. This fact may be related to the presence of Biomphalaria glabrata at a specific point and low coverage of basic sanitation.

show abstract

“…On its pages, we find the most important records of the spread of schistosomiasis in Sao Paulo 11 , 110 , 132 , 138 , as well as relevant research on the biology of its intermediate host 101 , studies focusing on biological control of planorbids 86 and on the planorbid chart of São Paulo state 170 , 171 . It is worth highlighting two articles that explore aspects little addressed in our literature: the study by Silva 157 (1985) described the disease expansion process in São Paulo and defends the thesis that the urbanization pattern would have been more relevant than the migration in the schistosomiasis expansion; the article written by Barreto 20 (1987), in turn, discussed the importance of studies on causal and predictor factors of this parasitosis for the development of intervention strategies.…”

Section: Introductionmentioning

confidence: 99%

Path of infectious diseases in Brazil in the last 50 years: an ongoing challenge

Waldman

Sato

2016

Rev. Saúde Pública

View full text Add to dashboard Cite

In this article, we comment on the main features of infectious diseases in Brazil in the last 50 years, highlighting how much of this path Revista de Saúde Pública could portray. From 1967 to 2016, 1,335 articles focusing on infectious diseases were published in Revista de Saúde Pública. Although the proportion of articles on the topic have decreased from about 50.0% to 15.0%, its notability remained and reflected the growing complexity of the research required for its control. It is noteworthy that studies design and analysis strategies progressively became more sophisticated, following the great development of epidemiology in Brazil in the recent decades. Thus, the journal has followed the success of public health interventions that permitted to control or eliminate numerous infectious diseases – which were responsible, in the past, for high rates of morbidity and mortality –, and also followed the reemergence of diseases already controlled and the emergence of until then unknown diseases, with a strong impact on the Brazilian population, establishing a little predictable and very challenging path.

show abstract

Estudo da suscetibilidade da Biomphalaria glabrata de Ourinhos (SP), à infecção pelo Schistosoma mansoni de Belo Horizonte (MG), e de São José dos Campos (SP)

Cited by 6 publications

References 2 publications

Distribuição e diversidade de espécies do gênero Biomphalaria em microrregiões localizadas no Médio Paranapanema, São Paulo, SP, Brasil

Distribuição e diversidade de espécies do gênero Biomphalaria em microrregiões localizadas no Médio Paranapanema, São Paulo, SP, Brasil

Schistosomiasis in the Middle Paranapanema river region, state of São Paulo, Brazil: Does it matter today for public health?

Path of infectious diseases in Brazil in the last 50 years: an ongoing challenge

Contact Info

Product

Resources

About