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Amazon

Larval food quantity affects development time, survival and adult biological traits that influence the vectorial capacity of Anopheles darlingi under laboratory conditions

August 7, 2012 - 11:50 -- Kabogo Ndegwa
Author(s): 
da Silva Araújo M, Gil LH, de Almeida e Silva A
Reference: 
Malaria Journal 2012, 11:261 (2 August 2012)

da SilvaGreater larval food supply led to enhance larval and production and larger mosquitoes with longer longevity and higher biting frequency.

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Evaluation of the naturally acquired antibody immune response to the Pv200L N-terminal fragment of Plasmodium vivax merozoite surface protein-1 in four areas of the Amazon Region of Brazil.

February 17, 2011 - 13:06 -- Patrick Sampao
Author(s): 
Storti-Melo LM., Souza-Neiras WC., Machado RL ., et al
Reference: 
Am J Trop Med Hyg. 2011 Feb;84(2 Suppl):58-63.

Results of this study provide evidence that Pv200L is a naturally immunogenic fragment of the PvMSP-1 and is associated with the degree of exposure to parasites.

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Increasing incidence of malaria in the Negro River basin, Brazilian Amazon

July 13, 2010 - 06:50 -- Patrick Sampao
Author(s): 
A.C. Cabral, N.F. Fé, M.C. Suárez-Mutis, M.N. Bóia, F.A. Carvalho-Costa
Reference: 
Transactions of the Royal Society of Tropical Medicine and Hygiene, Volume 104, Issue 8, August 2010, Pages 556-562

This study suggests that urban and periurban areas of this municipality are highly susceptible to epidemic malaria, which is endemic in the Yanomami Indian reservation near the city.

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The South American Plasmodium falciparum var gene repertoire is limited, highly shared and possibly lacks several antigenic types

March 5, 2010 - 08:59 -- Kabogo Ndegwa
Author(s): 
Letusa Albrecht, Catarina Castiñeiras, Bruna O. Carvalho, Simone Ladeia-Andrade, Natal Santos da Silva, Erika H.E. Hoffmann, Rosimeire C. dalla Martha, Fabio T.M. Costa, Gerhard Wunderlich
Reference: 
Gene, Volume 453, Issues 1-2, 15 March 2010, Pages 37-44

The frequently observed mild outcomes of falciparum malaria in many places of the Amazon area prompted us to ask whether a globally restricted variant (var) gene repertoire is present in currently circulating and older isolates of this area.

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Open Access | The Plasmodium falciparum merozoite surface protein-1 19kD antibody response in the Peruvian Amazon predominantly targets the non-allele specific, shared sites of this antigen

January 7, 2010 - 13:45 -- Ingeborg van Schayk
Author(s): 
Patrick L Sutton, Eva H Clark, Claudia Silva, OraLee H Branch
Reference: 
Malaria Journal 2010, 9:3 (4 January 2010)

Here, the potential for allele-specific polymorphisms in this population is investigated, and the allele-specificity of antibody responses to PfMSP119kD are determined.

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Recurrent Parasitemias and Population Dynamics of Plasmodium vivax Polymorphisms in Rural Amazonia

December 18, 2009 - 15:58 -- Ingeborg van Schayk
Author(s): 
Pamela Orjuela-Sánchez, Natal Santos da Silva, Mônica da Silva-Nunes, AND Marcelo Urbano Ferreira
Reference: 
Am J Trop Med Hyg 2009;81 961-968

Here we describe high rates of P. vivax recurrence (26–40% 180 days after treatment) in two cohorts of rural Amazonians exposed to low levels of malaria transmission after a vivax malaria episode treated with chloroquine-primaquine.

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Plasmodium falciparum and Plasmodium vivax Infections in the Peruvian Amazon: Propagation of Complex, Multiple Allele-Type Infections without Super-Infection

December 18, 2009 - 15:54 -- Ingeborg van Schayk
Author(s): 
Patrick L. Sutton, Victor Neyra, Jean N. Hernandez, AND OraLee H. Branch
Reference: 
Am J Trop Med Hyg 2009;81 950-960

The results suggest propagation of mixed infections by multiple inocula, not super-infection, implying decade-long opportunity for outcrossing in these mixed infections.

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Open Access | A rapid malaria appraisal in the Venezuelan Amazon

December 14, 2009 - 13:52 -- Ingeborg van Schayk
Author(s): 
Wolfram G Metzger, Anibal M Giron, Sarai Vivas-Martinez, Julio Gonzalez, Antonio J Charrasco, Benjamin G Mordmuller, Magda Magris
Reference: 
Malaria Journal 2009, 8:291 (11 December 2009)

Using a rapid malaria appraisal method, the objective of the study was to provide baseline data about malaria and malaria control in Amazonas State. The authors conclude that malaria control is possible, even in tropical rain forest areas, if the health system is working adequately.

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