Navegando por Autor "MACHADO, Ricardo Luiz Dantas"

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Acesso aberto (Open Access)
Basic sanitation, socioeconomic conditions, and degree of risk for the presence and maintenance of malaria in a low-transmission area in the Brazilian Amazon
(Universidade Federal do Pará, 2015-10) MONTEIRO, Thais Hetierre Abreu; CHAVES, Tânia do Socorro Souza; MATOS, Haroldo José de; SOFFFIATTI, Nelson Fernando de Lisboa; GUIMARÃES, Luis Henrique Rocha; VENTURA, Ana Maria Revorêdo da Silva; MACHADO, Ricardo Luiz Dantas; GUIMARÃES, Ricardo José de Paula Souza e
INTRODUCTION:This study aimed to evaluate basic sanitation and socioeconomic indicators, reported cases of malaria, and risk of contracting malaria in the Ananindeua municipality, State of Pará. METHODS: Data on basic sanitation and socioeconomic dimensions were taken from the Brazilian Institute of Geography and Statistics [ Instituto Brasileiro de Geografia e Estatística (IBGE)] 2010 census. Epidemiological malaria information was taken from the Epidemiological Malaria Surveillance Information System [ Sistema de Informação de Vigilância Epidemiológica de Malária (SIVEP/Malaria)], between 2003 and 2013 of the Ministry of Health and from the SIVEP/Malaria forms of the municipality's Endemic Diseases Unit for 2,013 cases. RESULTS: Our data do not confirm the correlation among indicators of basic sanitation, socioeconomic conditions, and water supply with malaria cases. Of the 1,557 cases evaluated, most were caused by Plasmodium vivax , with rare cases of Plasmodium falciparum and mixed infections. There were 756 notifications in 2003. The number of reported cases was sharply reduced between 2006 and 2012, but a 142-case outbreak occurred in 2013. Ananindeua municipality's Annual Parasite Index indicated low risk in 2003 and no risk in other years, and the 2,013 cases were predominantly male individuals aged ≥40 years.
Acesso aberto (Open Access)
Susceptibility of Anopheles aquasalis and An. darlingi to Plasmodium vivax VK210 and VK247
(2006-08) SILVA, Ana de Nazaré Martins da; SANTOS, Carla Christiani Bastos dos; LACERDA, Raimundo Nonato da Luz; MACHADO, Ricardo Luiz Dantas; PÓVOA, Marinete Marins
The susceptibility of Anopheles aquasalis (F3 generation) and An. darlingi (F1 generation) to Plasmodium vivax circumsporozoite protein phenotypes from a limited number of blood samples of malaria patients in Belém, state of Pará, Brazil, was examined. A polymerase chain reaction was used to determine the P. vivax phenotypes in blood samples and the blood-fed infected mosquitoes were dissected and tested by ELISA. In all patient infections, more infected An. aquasalis and An. darlingi were positive for VK210 compared with VK247.