Modelling inter - human transmission dynamics of Chagas disease analysis and application

Transmission of Trypanosoma cruzi, the causal agent of Chagas disease, has expanded from rural endemic to urban areas due to migration. This so-called urban Chagas is an emerging health problem in American, European, Australian and Japanese cities. We present a mathematical model to analyse the dyna...

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Autor principal: Fabrizio, María del Carmen
Otros Autores: Schweigmann, Nicolas J., Bartoloni, Norberto José
Formato: Artículo
Lenguaje:Español
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Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2014fabrizio1.pdf
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Aporte de:Registro referencial: Solicitar el recurso aquí
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245 0 0 |a Modelling inter - human transmission dynamics of Chagas disease  |b analysis and application 
520 |a Transmission of Trypanosoma cruzi, the causal agent of Chagas disease, has expanded from rural endemic to urban areas due to migration. This so-called urban Chagas is an emerging health problem in American, European, Australian and Japanese cities. We present a mathematical model to analyse the dynamics of urban Chagas to better understand its epidemiology. The model considers the three clinical stages of the disease and the main routes of inter-human transmission. To overcome the complexities of the infection dynamics, the next-generation matrix method was developed. We deduced expressions which allowed estimating the number of new infections generated by an infected individual through each transmission route at each disease stage, the basic reproduction number and the number of individuals at each disease stage at the outbreak of the infection. The analysis was applied to Buenos Aires city [Argentina]. We estimated that 94 percent of the new infections are generated by individuals in the chronic indeterminate stage. When migration was not considered, the infection disappeared slowly and R 0=0·079, whereas when migration was considered, the number of individuals in each stage of the infection tended to stabilize. The expressions can be used to estimate different numbers of infected individuals in any place where only inter-human transmission is possible. 
650 |2 Agrovoc  |9 26 
653 0 |a ARGENTINA 
653 0 |a BASIC REPRODUCTION NUMBER 
653 0 |a BIRTH RATE 
653 0 |a BLOOD TRANSFUSION 
653 0 |a CHAGAS DISEASE 
653 0 |a CHRONIC DISEASE 
653 0 |a CITY 
653 0 |a CONGENITAL DISORDER 
653 0 |a CONGENITAL INFECTION 
653 0 |a DISEASE TRANSMISSION 
653 0 |a DYNAMICS 
653 0 |a EPIDEMIC 
653 0 |a HUMAN 
653 0 |a MAJOR CLINICAL STUDY 
653 0 |a MATHEMATICAL MODEL 
653 0 |a MIGRATION 
653 0 |a MORTALITY 
653 0 |a NEXT-GENERATION MATRIX 
653 0 |a PARASITE TRANSMISSION 
653 0 |a SENSITIVITY ANALYSIS 
653 0 |a SUSCEPTIBLE POPULATION 
653 0 |a TRYPANOSOMA CRUZI 
653 0 |a URBAN AREA 
653 0 |a URBAN CHAGAS 
700 1 |a Schweigmann, Nicolas J.  |9 67741 
700 1 |9 6346  |a Bartoloni, Norberto José 
773 |t Parasitology  |g vol.141, no.6 (2014), p.837-848 
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