Extended screening of Trypanosoma cruzi among the offspring of infected women. Barcelona North metropolitan area, Catalonia (Spain), 2005–2016
To date, very little data is available on the extensive, familiar, serological screening of Trypanosoma cruzi from infected-index cases. As it is a parasite with possibility of mother-to-child foetal transmission, the study of the offspring of chronically infected women has a special relevance. An o...
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Published in: | Enfermedades infecciosas y microbiologia clinica (English ed.) Vol. 36; no. 7; pp. 397 - 402 |
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Main Authors: | , , , , , , |
Format: | Journal Article |
Language: | English |
Published: |
Elsevier España, S.L.U
01-08-2018
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Online Access: | Get full text |
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Summary: | To date, very little data is available on the extensive, familiar, serological screening of Trypanosoma cruzi from infected-index cases. As it is a parasite with possibility of mother-to-child foetal transmission, the study of the offspring of chronically infected women has a special relevance.
An observational study using a capture-recapture method that evaluates the offspring serological status of women diagnosed with T. cruzi infection (positive serology) in the northern metropolitan area of Barcelona during 2005–2016.
A total of 238 women with positive serology for T. cruzi were identified. Of these, 117 (49.2%) could be localised. Their offspring summarised 300 individuals, of which 192 (64%) had serology records, with 23 positive for T. cruzi (11.98%; CI95%: 8.1–17.3). Among the 53 children born within the study area, 5 (9.8%, CI95%: 4.2–20.9) cases of vertical transmission were recorded. All children born as of 2010 (the starting year of mother screening) had serological outputs.
Offspring of T. cruzi-seropositive women showed a high rate of seropositivity. The prevalence of vertical transmission is also remarkably high but comparable to that obtained in other European studies. The main source of loss was non-accessible women. It is reasonable to formally include extensive, familiar, serological assessment in Chagas screening guidelines. In order to avoid losses, any eventual screening should be implemented at the time of the maternal diagnosis.
Existen escasos datos sobre el cribado serológico extenso, familiar, de Trypanosoma cruzi a partir de un infectado-índice. Por tratarse de una parasitosis con posibilidad de transmisión materno-fetal, el estudio de la descendencia de mujeres crónicamente infectadas posee una especial relevancia.
Estudio observacional por método de captura-recaptura que valora el estado serológico en la descendencia de las mujeres diagnosticadas de infección por T. cruzi en el área metropolitana norte de Barcelona durante el periodo 2005-2016.
Se identificaron 238 mujeres son serología positiva para T. cruzi. De ellas, se pudieron localizar 117 (49.2%) y sus 300 descendientes. Entre los descendientes, 192 (64%) tenían registro de serología, con 23 positivas para T. cruzi (11,98%; IC 95%: 8,1-17,3). Hubo 53 niños nacidos en el área de estudio, con 5 casos de transmisión vertical (9,8%; IC 95%: 4,2-20,9). Todos los nacidos a partir de la implementación del programa de cribado materno (en 2010) tenían registro serológico.
La población de descendientes de mujeres con serología positiva para T. cruzi muestra una tasa elevada de seropositividad. La prevalencia de transmisión vertical es notablemente alta, pero comparable a la obtenida en otros estudios europeos. La principal fuente de pérdidas lo constituyen las mujeres ilocalizables. Es razonable incluir la determinación serológica familiar extensa en los protocolos de cribado de enfermedad de Chagas. A fin de evitar pérdidas, se debería implementar un eventual cribado en el momento del diagnóstico materno. |
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ISSN: | 2529-993X 2529-993X |
DOI: | 10.1016/j.eimce.2018.05.001 |