Factors associated with recurrent Plasmodium vivax malaria in Porto Velho, Rondônia State, Brazil, 2009
This open retrospective cohort study aimed to describe the incidence of recurrent Plasmodium vivax malaria and associated factors in Porto Velho, Rondônia State, Brazil, in 2009. Data were collected from the National Information System for Malaria Epidemiological Surveillance. There were 23,365 repo...
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Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz
2014-07-01
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doaj-52a02b4c245844e4a3236d8b0d041f8c2020-11-24T22:45:20ZengEscola Nacional de Saúde Pública, Fundação Oswaldo CruzCadernos de Saúde Pública0102-311X2014-07-013071403141710.1590/0102-311X00169312S0102-311X2014000801403Factors associated with recurrent Plasmodium vivax malaria in Porto Velho, Rondônia State, Brazil, 2009Luciano Rodrigues SimõesEduardo Rodrigues Alves JrDaniele Ribatski-SilvaLuciano Teixeira GomesAndréia Ferreira NeryCor Jesus Fernandes FontesThis open retrospective cohort study aimed to describe the incidence of recurrent Plasmodium vivax malaria and associated factors in Porto Velho, Rondônia State, Brazil, in 2009. Data were collected from the National Information System for Malaria Epidemiological Surveillance. There were 23,365 reported P. vivax malaria cases in 2009, 23% of which were classified as relapses. Incidence density of P. vivax recurrence was 45.1/100 patient-years, mostly occurring between the 4th and 13th week after initiating treatment. Male gender, shorter time since onset of symptoms, and higher parasitemia in the initial infection increased the risk of relapse during the year, with a 10% reduction in relative risk for longer symptoms and 11% and 15% increases in relative risk for males and higher initial parasitemia, respectively. However, the results show low clinical relevance for these associations, thereby limiting their applicability to decision-making at the public health level.http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0102-311X2014000801403&lng=en&tlng=enRecurrenciaPlasmodium vivaxMalaria |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Luciano Rodrigues Simões Eduardo Rodrigues Alves Jr Daniele Ribatski-Silva Luciano Teixeira Gomes Andréia Ferreira Nery Cor Jesus Fernandes Fontes |
spellingShingle |
Luciano Rodrigues Simões Eduardo Rodrigues Alves Jr Daniele Ribatski-Silva Luciano Teixeira Gomes Andréia Ferreira Nery Cor Jesus Fernandes Fontes Factors associated with recurrent Plasmodium vivax malaria in Porto Velho, Rondônia State, Brazil, 2009 Cadernos de Saúde Pública Recurrencia Plasmodium vivax Malaria |
author_facet |
Luciano Rodrigues Simões Eduardo Rodrigues Alves Jr Daniele Ribatski-Silva Luciano Teixeira Gomes Andréia Ferreira Nery Cor Jesus Fernandes Fontes |
author_sort |
Luciano Rodrigues Simões |
title |
Factors associated with recurrent Plasmodium vivax malaria in Porto Velho, Rondônia State, Brazil, 2009 |
title_short |
Factors associated with recurrent Plasmodium vivax malaria in Porto Velho, Rondônia State, Brazil, 2009 |
title_full |
Factors associated with recurrent Plasmodium vivax malaria in Porto Velho, Rondônia State, Brazil, 2009 |
title_fullStr |
Factors associated with recurrent Plasmodium vivax malaria in Porto Velho, Rondônia State, Brazil, 2009 |
title_full_unstemmed |
Factors associated with recurrent Plasmodium vivax malaria in Porto Velho, Rondônia State, Brazil, 2009 |
title_sort |
factors associated with recurrent plasmodium vivax malaria in porto velho, rondônia state, brazil, 2009 |
publisher |
Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz |
series |
Cadernos de Saúde Pública |
issn |
0102-311X |
publishDate |
2014-07-01 |
description |
This open retrospective cohort study aimed to describe the incidence of recurrent Plasmodium vivax malaria and associated factors in Porto Velho, Rondônia State, Brazil, in 2009. Data were collected from the National Information System for Malaria Epidemiological Surveillance. There were 23,365 reported P. vivax malaria cases in 2009, 23% of which were classified as relapses. Incidence density of P. vivax recurrence was 45.1/100 patient-years, mostly occurring between the 4th and 13th week after initiating treatment. Male gender, shorter time since onset of symptoms, and higher parasitemia in the initial infection increased the risk of relapse during the year, with a 10% reduction in relative risk for longer symptoms and 11% and 15% increases in relative risk for males and higher initial parasitemia, respectively. However, the results show low clinical relevance for these associations, thereby limiting their applicability to decision-making at the public health level. |
topic |
Recurrencia Plasmodium vivax Malaria |
url |
http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0102-311X2014000801403&lng=en&tlng=en |
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