Dados epidemiológicos de malária em todo o Brasil, referentes a 1993

Marques, Agostinho Cruz

doi:10.1590/s0037-86821995000200012

Cited by 9 publications

(7 citation statements)

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“…Important components of the control effort have been appointed in the past. They were related to better housing, that decrease the man vector contact and increase residual insecticide activity, the determination of the case origins, society engagement and, early diagnosis and treatment of the malaria cases (Botelho et al 1986, Sawyer 1986, Motta 1992, Barata 1995, Marques 1995, Voorham 1997. We suggest that measures that could decrease people flow could play a putative role in malaria control and should be considered in the infrastructure of any government settlement programs.…”

Section: Discussionmentioning

confidence: 99%

Biting Indices, Host-seeking Activity and Natural Infection Rates of Anopheline Species in Boa Vista, Roraima, Brazil from 1996 to 1998

Silva-Vasconcelos

Kató

Mourão

et al. 2002

Mem. Inst. Oswaldo Cruz

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The epidemiology of the transmission of malaria parasites varies ecologically. To observe some entomological aspects of the malaria transmission in an urban environment, a longitudinal survey of anopheline fauna was performed in Boa Vista, Roraima, Brazil. A total of 7,263 anophelines was collected in human bait at 13 de Setembro and Caranã districts: Anopheles albitarsis sensu lato (82.8%), An. darlingi (10.3%), An. braziliensis (5.5%), An. peryassui (0.9%) and An. nuneztovari (0.5%). Nightly 12 h collections showed that An. albitarsis was actively biting throughout the night with peak activities at sunset and at midnight. An. darlingi bit during all night and did not demonstrate a defined biting peak. Highest biting indices, entomological inoculation rates and malaria cases were observed seasonally during the rainy season (April-November). Hourly collections showed host seek activity for all mosquitoes peaked during the first hour after sunset. An. darlingi showed the highest plasmodial malaria infection rate followed by An. albitarsis, An. braziliensis and An. nuneztovari (8.5%, 4.6%, 3% and 2.6%, respectively). An. albitarsis was the most frequently collected anopheline, presented the highest biting index and it was the second most frequently collected infected species infected with malaria parasites. An. albitarsis and An. darlingi respectively, are the primary vectors of malaria throughout Boa Vista

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Section: Discussionmentioning

confidence: 99%

Biting Indices, Host-seeking Activity and Natural Infection Rates of Anopheline Species in Boa Vista, Roraima, Brazil from 1996 to 1998

Silva-Vasconcelos

Kató

Mourão

et al. 2002

Mem. Inst. Oswaldo Cruz

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“…At the time of blood collection, these subjects were living in the municipality of Apiacas, in the state of Mato Grosso, where approximately 1,200 cases/ 1,000 inhabitants were diagnosed in 1993; half of them were caused by P. falciparum. 19 The prevalence of parasitemia decreased in subsequent years. In the study year (1996), the prevalence of malaria was 18% in the general population (531 miners evaluated), indicating that the pattern of transmission was mesoendemic.…”

Section: Methodsmentioning

confidence: 99%

Association of the IgG response to Plasmodium falciparum merozoite protein (C-terminal 19 kD) with clinical immunity to malaria in the Brazilian Amazon region.

Braga

Barros²,

Reis³

et al. 2002

The American Journal of Tropical Medicine and Hygiene

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Abstract. The antibody response to the C-terminal 19-kD fragment of Plasmodium falciparum merozoite surface protein-1 (PfMSP1-19) was investigated in groups of subjects living in areas of Brazil with different levels of malaria transmission. The prevalence and the levels of IgG to PfMSP1-19 increased with the time of exposure and were positively correlated with the absence of clinical symptoms in parasitemic patients. The frequency of positive response and the mean level of IgG were higher in areas where malaria prevalence was more intense, especially among asymptomatic patients. The serum absorbance values of the IgG1 isotype were significantly higher among subjects with long-term exposure and in asymptomatic infections. These data suggest a protective role of IgG1 in naturally acquired immunity in spite of the unstable transmission levels in the Brazilian Amazon.

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“…In Rondônia, the percentage of cases of infections with P. falciparum is lower, while that of P. vivax is slightly higher than that of the Amazon region as a whole; P. vivax infections account for 89.8% of the cases, P. falciparum for 9.4%, and P. malariae for 0.01%. According to Marques et al [31], the prevalence of infection with P. falciparum in Rondônia was 59% in 1988, 34% in 1992, and 25% in 1996. Rodrigues et al [14] indicated a tendency toward reduced numbers of cases of infection caused by P. falciparum throughout Brazil, which may be due to the introduction of halofantrine and artesunate in the treatment of malaria.…”

Section: Discussionmentioning

confidence: 99%

Reduction of incidence and relapse or recrudescence cases of malaria in the western region of the Brazilian Amazon

Vieira

Gim

Zaqueo

et al. 2014

J Infect Dev Ctries

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Introduction: Malaria is one of the major parasitic diseases in the State of Rondônia, located in the western Brazilian Amazon. The basic treatment scheme for this disease is chloroquine and primaquine. This study evaluated the epidemiological profile of malaria in Rondônia between 2008 and 2012. Methodology: The epidemiological data were provided by the Health Surveillance Agency from the State of Rondônia, and socioeconomic indicators were obtained from the Brazilian Institute of Geography and Statistics, Department of Informatics of the Unified Health System, and from the National Institute for Space Research. The analyzed variables included year of diagnosis, gender, age group, main activity performed in the 15 days previous to the diagnosis, parasite species, level of parasitemia, number of relapse/recrudescence cases, and socioeconomic and environmental data for Rondônia. Results: A total of 238,626 cases of malaria were recorded in Rondônia during the study period. Of this total, 65.6% were men and the most prevalent age group was 20-39 years. Plasmodium vivax was the most common parasite (89.8%), followed by Plasmodium falciparum (9.4%). An average of 30.9% of the individuals who were tested presented with relapse/recrudescence malaria. The API value was highest in 2008 and lowest in 2012, corresponding to 42.3 cases and 19.2 cases per 1,000 inhabitants, respectively. Conclusions: A 58% reduction in the number of malaria cases and a 36.2% reduction in the number of relapse/recrudescence malaria cases were observed, due to increases in the economy, improvements in the health system, and reduction of deforestation in this region.

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Dados epidemiológicos de malária em todo o Brasil, referentes a 1993

Cited by 9 publications

References 0 publications

Biting Indices, Host-seeking Activity and Natural Infection Rates of Anopheline Species in Boa Vista, Roraima, Brazil from 1996 to 1998

Biting Indices, Host-seeking Activity and Natural Infection Rates of Anopheline Species in Boa Vista, Roraima, Brazil from 1996 to 1998

Association of the IgG response to Plasmodium falciparum merozoite protein (C-terminal 19 kD) with clinical immunity to malaria in the Brazilian Amazon region.

Reduction of incidence and relapse or recrudescence cases of malaria in the western region of the Brazilian Amazon

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