Foco de doença de Chagas em São Fidélis, no estado do Rio de Janeiro

Lorosa, Elias Seixas; Santos, Carolina Magalhães dos; Jurberg, José

doi:10.1590/s0037-86822008000400020

Cited by 11 publications

(10 citation statements)

References 4 publications

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“…The visits conducted by environmental surveillance agents in the present study revealed that triatomine bugs are regularly found in houses in at least 5 municipalities of the region (São Fidélis, São Sebastião do Alto, Santa Maria Madalena, Conceição de Macabu, and Trajano de Moraes). Other studies also described the presence of T. vitticeps specimens in houses in the same region [ 18 - 21 , 23 ]. Furthermore, other studies also described patients with CD born in the Northern region of RJ [ 11 , 15 ].…”

Section: Discussionmentioning

confidence: 92%

“…Many factors may influence the presence of autochthonous cases of CD in RJ, such as past and present occurrence of T. vitticeps , a species endemic in the Northern region of RJ; continuous deforestation with successive economic cycles in the region; the presence of rural inhabitants with permanent farming settlements; and a high number of dwellings of low socioeconomic status [ 19 - 21 , 49 ]. Additionally, vectors which usually invade but do not colonize homes are attracted to house lights and the absence of ceilings, window glass, and screens in many of the houses visited in the field study provides the best conditions for invasion [ 21 , 23 ]. The consume of wild animals may also contribute to the emergence of human cases of CD not only due to the risk of accidental infection from undercooked meat, but also due to the decrease in wild food sources for triatomine bugs [ 46 , 50 - 52 ].…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, CD autochthonous cases in RJ were not fully recognized. However, over the past few years, focus of CD had occurred in rural areas of RJ where specimens of T. vitticeps were collected inside houses [ 22 , 23 ]. Human cases of CD were identified in these locations, calling attention to the possible vectorial transmission of the disease in this state.…”

Section: Introductionmentioning

confidence: 99%

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Autochthonous transmission of Chagas disease in Rio de Janeiro State, Brazil: a clinical and eco-epidemiological study

et al. 2015

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BackgroundAfter the control of the main modes of Chagas disease (CD) transmission in most endemic countries, it is important to identify the participation of native sylvatic vectors in CD transmission. Although CD is not considered endemic in Rio de Janeiro State (RJ), Brazil, we identified patients with CD born in RJ and investigated the possible autochthonous transmission in the state.MethodsPatients born in RJ and followed in our institution between 1986 and 2011 were retrospectively analyzed. The cases identified as autochthonous transmission were submitted to epidemiological, clinical, serological, parasitological and molecular studies. Sectional field study with serological survey, research of sylvatic reservoirs and vectors was conducted in rural areas where patients were born.ResultsAmong 1963 patients, 69 (3.5%) were born in RJ. From these, 15 (21.7%) were considered to have acquired the infection by autochthonous transmission. Cardiac form was the commonest form of presentation (60%). In rural areas in RJ northern region, sylvatic cycles of Trypanosoma cruzi and domestic invasion by Triatoma vitticeps were identified, and CD prevalence among inhabitants was 0.74%.TcI genotype was identified in sylvatic reservoirs and vectors. The genotype (mixed infection TcI/TcVI) could be identified in one of the autochthonous cases.ConclusionsThe autochthonous vectorial transmission of CD occurs in RJ, probably due to wild cycles of T. cruzi and sylvatic vectors, such as T. vitticeps. Therefore, the health authorities should evaluate if RJ should be included in the original endemic area of CD and CD should be included in the diagnostic work out of cardiomyopathy of patients born in RJ. Moreover, control and educational measures should be put into place in the risk areas.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Autochthonous transmission of Chagas disease in Rio de Janeiro State, Brazil: a clinical and eco-epidemiological study

et al. 2015

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“…The late diagnosis of acute CD in this case is at least in part due to the fact that CD was never considered endemic in RJ. There are few reports of domiciled triatomines in RJ but the domestic invasion of human habitations by sylvatic triatomines is frequent 2 , 7 , 8 , 11 , 13 , 14 , 21 . Although domestic invasion by T. tibiamaculata in RJ is very rare, this triatomine has been found frequently inside homes in the Bahia State 6 , 10 .…”

Section: Discussionmentioning

confidence: 99%

“…However, T. vitticeps may be attracted to lights and invade human habitations in RJ rural areas 7 , 8 , 11 , 13 , 14 , 21 .…”

Section: Introductionmentioning

confidence: 99%

First Report of Acute Chagas Disease by Vector Transmission in Rio De Janeiro State, Brazil

Sangenis

Sousa

Silva

et al. 2015

Rev. Inst. Med. trop. S. Paulo

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SUMMARYChagas disease (CD) is an endemic anthropozoonosis from Latin America of which the main means of transmission is the contact of skin lesions or mucosa with the feces of triatomine bugs infected by Trypanosoma cruzi. In this article, we describe the first acute CD case acquired by vector transmission in the Rio de Janeiro State and confirmed by parasitological, serological and PCR tests. The patient presented acute cardiomyopathy and pericardial effusion without cardiac tamponade. Together with fever and malaise, a 3 cm wide erythematous, non-pruritic, papule compatible with a "chagoma" was found on his left wrist. This case report draws attention to the possible transmission of CD by non-domiciled native vectors in non-endemic areas. Therefore, acute CD should be included in the diagnostic workout of febrile diseases and acute myopericarditis in Rio de Janeiro.

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Analysis of the geographical distribution of Triatoma vitticeps (Stål, 1859) based on data of species occurrence in Minas Gerais, Brazil

Souza

Diotaiuti

Lorenzo

et al. 2010

Infection, Genetics and Evolution

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The purpose of this study was to determine the potential for infestation of man-made environments by Triatoma vitticeps, correlating the epidemiological importance of this species with that of others present in the Brazilian state of Minas Gerais. In addition, climatic variables that could help explain the distribution of this species and clarify its population dynamics were sought. This was done by carrying out a historical survey of the presence of T. vitticeps in artificial ecotopes, using data from the Fundação Nacional de Saúde (FUNASA). Monthly records of bioclimatic variables averaged for the period 1950-2000 and pixel size of 1kmx1km provided a reference for spatial distribution analysis. Annual rainfall and rainfall of the most humid trimester are the best indicators of the species distribution. To confirm the importance of these variables, T. vitticeps eggs were exposed to different levels of relative humidity. Hatching was found to vary significantly, and low humidity showed a significant negative effect on egg hatching. Our results demonstrate a strong association between T. vitticeps and high environmental humidity, which apparently acts as a limiting factor on the distribution of this triatomine.

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Foco de doença de Chagas em São Fidélis, no estado do Rio de Janeiro

Cited by 11 publications

References 4 publications

Autochthonous transmission of Chagas disease in Rio de Janeiro State, Brazil: a clinical and eco-epidemiological study

Autochthonous transmission of Chagas disease in Rio de Janeiro State, Brazil: a clinical and eco-epidemiological study

First Report of Acute Chagas Disease by Vector Transmission in Rio De Janeiro State, Brazil

Analysis of the geographical distribution of Triatoma vitticeps (Stål, 1859) based on data of species occurrence in Minas Gerais, Brazil

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