Seroepidemiology of human toxoplasmosis in Chile

Contreras, María Angélica; Schenone, H; Salinas, Patricia; Sandoval, L; Rojas, Antonio; Villarroel, F; Solís, Francisco J.

doi:10.1590/s0036-46651996000600008

Cited by 27 publications

(20 citation statements)

References 11 publications

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“…Compared to other Latin American urban surveys, our seroprevalence in students was higher than reported from Chile in 1982-1994 5 . Among pregnant women, seroprevalence was similar to that found in La Habana, Cuba 16 .…”

Section: Discussioncontrasting

confidence: 82%

Seroprevalence of toxoplasmosis in Fortaleza, Ceará, Brazil

Rey

Ramalho

1999

Rev. Inst. Med. trop. S. Paulo

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SUMMARYA serological survey of Toxoplasma gondii infection in population groups in Fortaleza, Brazil, was conducted, in order to identify seroprevalence rates according to age and risk factors associated with acquired infection. A Toxoplasma IgG-antibody enzyme immunoassay (Sanofi Pasteur Diagnostics, Marnes la Coquette, France) was employed to assess the immunity. Public day-care centers and schools were randomly selected, while three large antenatal clinics and maternity units were choosen by its importance. Population groups and results of 997 blood tests were: 227 children (mean age 3.8 years), 22.8% seropositives; 584 students (mean 11.4 years), 58.4%, and pregnant and postpartum women (mean 24 years), 71.5% seropositives (p < 0.001). Of 256 participants reporting close contact with cats, 59.8% were seropositive, in contrast with 51% seropositives without contact (relative risk 1.17; 95% confidence interval 1.04-1.33; p = 0.01). Having three or more siblings at home was related to higher seroprevalence in children and students (relative risk 1.39; 95% confidence interval 1.21-1.60; p < 0.01). In conclusion, toxoplasmosis seroprevalence showed a rapid increase during the first ten years of life, in association with close contact with cats and larger households, probably related to inappropriate hygiene and child-care practices.

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Section: Discussioncontrasting

confidence: 82%

Seroprevalence of toxoplasmosis in Fortaleza, Ceará, Brazil

Rey

Ramalho

1999

Rev. Inst. Med. trop. S. Paulo

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“…To estimate congenital toxoplasmosis incidence was used the estimated Latin-American incidence mean (10%) of toxoplasmosis calculated of several studies 5,8,10,12,16,17,18,23,24,29,33,34 .…”

Section: Methodsmentioning

confidence: 99%

“…gondii infection is widely spread in Latin America, mainly in tropical areas, where shows prevalence range of 65% in the population 15,28 . High prevalence has been reported in Chile 10,28 , Brazil 5,19 , Ecuador 17 , Panamá 15,31 , Costa Rica 18 , Mexico 34 , Cuba 24 and Venezuela 8,12,16,23,25,29 .…”

Section: Introductionmentioning

confidence: 99%

Seroepidemiology of toxoplasmosis in women of childbearing age from a marginal community of Maracaibo, Venezuela

Díaz-Suárez

Estévez

2009

Rev. Inst. Med. trop. S. Paulo

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SuMMarYThe aim of this study was to determine the prevalence of anti-T. gondii total and IgM antibodies in women of childbearing age. One hundred serum samples of women were studied with age range from 11 to 45 years old. Samples were chosen by random. The determination of total antibodies was carried out through the indirect hemagglutination technique and IgM antibodies by ELISA's technique. The statistical analysis was carried out through the Chi square and the Spearman correlation tests. The theoretical estimated incidence of congenital toxoplasmosis was calculated, according to the annual increment of antibody prevalence among the age groups. The overall prevalence of toxoplasmosis was 33%, while only six individuals (18.2%) were positive to IgM. The highest prevalence was observed in the 11-35 year-old age group. The theoretical estimated incidence was 1.5 for 100 pregnancies in women of 21-25 year-old group; it decreased until 0.1% in the 41-45 year-old age group. The findings show a high prevalence of toxoplasmosis in this community with a high infection risk in women of the studied age group and the high cat population observed, suggesting that the transmission way by contaminated soils may play a main role in the spreading of toxoplasmosis in this community.

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“…Dados da literatura mostram que há prevalência da infecção de mais de 50% em vários grupos populacionais. Na Europa e em varias regiões da América Latina, relató-rios epidemiológicos evidenciam prevalência superior a 90% a partir da quarta década de vida (2) . Nos Estados Unidos, entre 30 e 40% da população já foram infecta- foi internado por traumatismo no membro superior esquerdo.…”

Section: Introductionunclassified

Toxoplasmose com comprometimento pulmonar

Viegas

Santos²,

ALMEIDA³

et al. 2002

J. Pneumologia

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Os autores relatam um caso de comprometimento pulmonar por T. gondii, em homem de 57 anos. O diagnóstico foi realizado por meios sorológicos, após exaustiva avaliação clínico-radiológica. São discutidas as variantes clínicas de polimiosite apresentadas pelo paciente e o comprometimento do aparelho respiratório, tendo em vista as poucas citações desta entidade na literatura médica brasileira. (J Pneumol 2002;28(4):241-243) Toxoplasmosis with pulmonary collapse dos pelo T. gondii até a idade de 50 anos; a maioria não sabia ser portadora da doença (3) . No Brasil não temos dados precisos sobre a incidência dessa patologia, mas acredita-se que entre a população rural os níveis são mais elevados do que possamos supor, trazendo em muitas ocasiões dificuldades técnicas em diagnosticar com precisão sintomas relacionados. Estudos realizados em Goiás, em 1972, mostraram índice de positividade de 48,6% pelo método de Sabin-Feldman, entre pessoas aparentemente sadias (4) . Na atualidade, a toxoplasmose pode ser agrupada em quatro grandes síndromes: infecção congênita, coriorretinite, infecção adquirida em imunocompetente e infecção em imunodeprimido.Nos humanos, a toxoplasmose adquirida na vida pós-natal apresenta-se com curso benigno, sendo geralmente assintomática no imunocompetente. Devido à persistên-cia do T. gondii na forma de cisto, a evolução crônica dessa doença pode apresentar reativação no decorrer de uma imunossupressão (5) . Ao disseminar-se sistemicamente, manifesta-se na maioria das vezes através de infartamento ganglionar cervical. Quando a linfadenopatia é generalizada, pode ser confundida com neoplasia, principalmente quando o indivíduo tem mais de 50 anos de idade. As dificuldades diagnósticas aumentam consideravelmente quando a doença se manifesta com miocardite (6) , encefalite (7) , polimiosite (8) ou pneumonite (9) . RELATO DO CASOHomem branco de 57 anos, não tabagista, morador da zona rural do Estado do Pará, criador de cavalos e outros animais, com relato de ingestão de carnes cruas, INTRODUÇÃOA toxoplasmose é uma zoonose de distribuição cosmopolita, causada pelo protozoário Toxoplasma gondii, com altas taxas percentuais de infecção em humanos e variações que diferem segundo os hábitos culturais e condições econômicas das populações estudadas (1) . Dados da literatura mostram que há prevalência da infecção de mais de 50% em vários grupos populacionais. Na Europa e em varias regiões da América Latina, relató-rios epidemiológicos evidenciam prevalência superior a 90% a partir da quarta década de vida (2) . Nos Estados Unidos, entre 30 e 40% da população já foram infecta-

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Seroepidemiology of human toxoplasmosis in Chile

Cited by 27 publications

References 11 publications

Seroprevalence of toxoplasmosis in Fortaleza, Ceará, Brazil

Seroprevalence of toxoplasmosis in Fortaleza, Ceará, Brazil

Seroepidemiology of toxoplasmosis in women of childbearing age from a marginal community of Maracaibo, Venezuela

Toxoplasmose com comprometimento pulmonar

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