Um foco de doença de Chagas transmitida pelo Triatoma infestans na Baixada Fluminense, Município de Caxias, Estado do Rio de Janeiro, Brasil

Coura, José Rodrigues; Silva, Carlos Eduardo Tosta da; Vieira, Walber Pinto; Figueiredo, Nataly Damasceno de

doi:10.1590/s0037-86821971000300002

Cited by 6 publications

(5 citation statements)

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“…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: 99%

“…However, cases possibly acquired in RJ were identified and mostly attributed to blood transfusion, travel history of patients born in RJ to other endemic states, and rarely to congenital transmission [ 12 ]. Nevertheless, the transmission route in patients with CD born in RJ remained unclear in some cases that could be autochthonous cases [ 11 , 12 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…The possible occurrence of autochthonous cases of CD in RJ is studied since 1943 when sylvatic reservoirs and vector infected by T. cruzi were identified in Rio de Janeiro city [ 16 ]. Some studies documented serologically positive cases of the disease but did not investigate other possible routes of transmission [ 11 , 13 , 15 , 17 ]. Despite the occurrence of domestic invasion by Triatoma vitticeps at various locations in the state of RJ and its recognized role as CD transmitter in Espírito Santo State (ES), the long interval between feeding and defecation has always put their role in CD transmission into question [ 18 - 25 ].…”

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: 99%

Section: Introductionmentioning

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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“…Triatomines invading houses is a phenomenon already described previously by Coura et al [18]. In the Municipality of Caxias, State of Rio de Janeiro, houses were investigated, and the presence of triatomines of the genus Triatoma was reported.…”

Section: Discussionmentioning

confidence: 64%

Home invasion of triatomines increases the risk of Chagas disease transmission in the Brazilian Amazon

Mota

Valente

Ramos

et al. 2020

Preprint

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Chagas disease is a parasitic infection with a large reemergent rates in some Amazon regions with usual features of outbreaks of the acute disease mainly by oral transmission. The main vectors of Trypanosoma cruzi are hematophagous insects, the triatomines. Some of them can establish themselves in human dwellings and their annexes but others are mostly wild. In the state of Pará, few records have been made about the occurrence of those wild vectors in fortuitous contact with inhabitants in riverside regions in the Amazon. These vector behaviours have been studied by our group since 2006, trying to explain their role in transmission of the silent disease or asymptomatic infection. The objective of this study is to describe the epidemiological profile of populations exposed to random triatomine home invasion in riverside areas with this registered occurrence. This is a cross-sectional study developed in Abaetetuba city, in the state of Pará, where we conducted a seroepidemiologic survey in inhabitants that registered triatomine home invasion. The results demonstrated that triatomine invasions occur especially in the in-home environment and in the rural zone. The genus Rhodnius was the most found in residences of the municipalities. Direct contact through the vector was reported by 15.55% of the total participants, and an unusual vector behaviour were observed during the day. Despite this small casuistic, 0.47% of the enrolled inhabitants had positive serology IgG anti- T. cruzi antibodies. We confirm one occurrence of asymptomatic infection in a child and, also, favourable links to the Chagas disease transmission chain. Faced with the scarcity of information on triatomine aggression in the Amazon, the authors recommended an entomological study of greater scope in those areas. The record of unusual vector behaviour and the serological surveillance of human populations under this risk may constitute a new tool for the early detection of silent infections and reinforce the knowledges about the behaviour of invading insects. At the same time, health education can assist in strategies for the prevention of Chagas' disease.

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“…In 1971 Aragão and Souza (1) dis covered domestic T. infestans in the municipality of Caxias. In 1971 Coura et al (3) described a localized /'focus of Chagas' disease close to the city of Rio de Janeiro, in the m unicipality of Caxias. Out of 33 houses searched, 18 were found infested by T. infestans, and in several of the insects * T h is w ork was su p p o rte d w ith fu n d s fro m th e C onselho N acional de P esq u isas of B razil, fro m th e M in istry of O verseas D ev elo p m en t, L ondon, a n d from th e W orld H e a lth O rg an izatio n .…”

Section: Introductionmentioning

confidence: 99%

Additional data on the epidemiology of chagas disease in the municipality of Caxias, Rio de Janeiro state, Brazil

Coura

Petana

1975

Rev. Soc. Bras. Med. Trop.

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An area believed to be an autochthonous focus for Chagas' disease was investigated in th e m unicipality of Caxias The im portunt epidemiological Information obtained from this investigation was the discovery of domestic a d a p ta tio n of T. infestans in an area w ith dense population .and w ith very low social anã sanitary conditions, in a locality considered as non-endem ic for the infection. INTRODU CTIONThe presence of triatom ine bugs in fected with T. cruzi in th e Rio de J a neiro State was first reported by Neiva (6) in 1914, and again by Neiva and Pinto (7) (3) described a localized /'focus of Chagas' disease close to the city of Rio de Janeiro, in the m unicipality of Caxias. Out of 33 houses searched, 18 were found infested by T. infestans, and in several of the insects * T h is w ork was su p p o rte d w ith fu n d s fro m th e C onselho N acional de P esq u isas of B razil, fro m th e M in istry of O verseas D ev elo p m en t, L ondon, a n d from th e W orld H e a lth O rg an izatio n . ** Professor of T ro p ic a l M edicine, H ead of D e p a rta m e n t of P re v e n tiv e M edicine, F e d e ra l U n iv ersity of Rio d e Ja n e iro . *** C o n s u lta n t in M edicai P arasito lo g y on se c o n d e m e n t to th e F ed eral U n iv ersity o f R io d e J a n e iro from th e M in istry of O verseas D ev elo p m en t, L ondon, u n d e r th e A n g lo -B razilian A greeent on T eçh-nical C o o p e ratio n . S u b m itte d to p u b lic a tio n o n 2.Í0.197S.

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Um foco de doença de Chagas transmitida pelo Triatoma infestans na Baixada Fluminense, Município de Caxias, Estado do Rio de Janeiro, Brasil

Cited by 6 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

Home invasion of triatomines increases the risk of Chagas disease transmission in the Brazilian Amazon

Additional data on the epidemiology of chagas disease in the municipality of Caxias, Rio de Janeiro state, Brazil

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