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Jules JR, Alencar J, Suárez-Mutis MC, Baptiste EJ, Albuquerque HD, Rosa-Freitas MG, Raccurt C, Oliveira RLD, Silva-do-Nascimento TF. Malaria in Haiti: A descriptive study on spatial and temporal profile from 2009 to 2018. Rev Soc Bras Med Trop 2022; 55:e0355. [PMID: 35239903 PMCID: PMC8909436 DOI: 10.1590/0037-8682-0355-2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 11/23/2021] [Indexed: 11/22/2022] Open
Abstract
Background: Haiti is one of the Caribbean countries where malaria persists. More than 99% of malaria cases are caused by Plasmodium falciparum, the main vector being the mosquito Anopheles albimanus. In this paper, we describe the epidemiological profile of malaria in Haiti between 2009 and 2018. Methods We analyzed information on cases reported by the Ministry of Health of Haiti and the World Health Organization (WHO). Results: Between 2009 and 2018, 232,479 malaria cases were reported by the Ministry of Public Health and Population (MSPP); an increase in the incidence of malaria in the country in 2010, followed by a decrease in 2011, was primarily observed. Due to recent efforts to reduce malaria by 2020, its incidence declined from 60,130 cases in 2010 to 8,978 cases in 2018. Controversially, in terms of the number of reported cases, the MSPP and WHO report conflicting data. However, the results from both datasets present the same trend in Haiti from 2009 to 2018. The results also illustrate the endemicity of the disease throughout Haiti, both in rural and urban areas, especially along the coast. Conclusions: This study emphasizes the need to promote official data collection and analyses, as well as the application of epidemiological surveillance of malaria at the municipal level, for a better understanding of the real impact of malaria on the Haitian population and to create more appropriate interventions.
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Affiliation(s)
- Jean Ricardo Jules
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Diptera, Rio de Janeiro, RJ, Brasil.,Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, RJ, Brasil
| | - Jeronimo Alencar
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Diptera, Rio de Janeiro, RJ, Brasil
| | - Martha Cecília Suárez-Mutis
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Doenças Parasitárias, Rio de Janeiro, RJ, Brasil
| | - Ernst Jn Baptiste
- Ministère de la Santé Publique et de Population (MSPP), Laboratoire et de Recherche (DELR), Direction d'Épidémiologie, Port-au-Prince, Haiti
| | - Hermano de Albuquerque
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Doenças Parasitárias, Rio de Janeiro, RJ, Brasil
| | - Maria Goreti Rosa-Freitas
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, RJ, Brasil.,Geniac Ltda, São Paulo, SP, Brasil
| | | | - Ricardo Lourenço de Oliveira
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, RJ, Brasil
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2
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Silva-do-Nascimento TF, Sánchez-Ribas J, Oliveira TMP, Bourke BP, Oliveira-Ferreira J, Rosa-Freitas MG, Lourenço-de-Oliveira R, Marinho-e-Silva M, Neves MSAS, Conn JE, Sallum MAM. Molecular Analysis Reveals a High Diversity of Anopheline Mosquitoes in Yanomami Lands and the Pantanal Region of Brazil. Genes (Basel) 2021; 12:1995. [PMID: 34946944 PMCID: PMC8701885 DOI: 10.3390/genes12121995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 11/16/2022] Open
Abstract
Identifying the species of the subfamily Anophelinae that are Plasmodium vectors is important to vector and malaria control. Despite the increase in cases, vector mosquitoes remain poorly known in Brazilian indigenous communities. This study explores Anophelinae mosquito diversity in the following areas: (1) a Yanomami reserve in the northwestern Amazon Brazil biome and (2) the Pantanal biome in southwestern Brazil. This is carried out by analyzing cytochrome c oxidase (COI) gene data using Refined Single Linkage (RESL), Assemble Species by Automatic Partitioning (ASAP), and tree-based multi-rate Poisson tree processes (mPTP) as species delimitation approaches. A total of 216 specimens collected from the Yanomami and Pantanal regions were sequenced and combined with 547 reference sequences for species delimitation analyses. The mPTP analysis for all sequences resulted in the delimitation of 45 species groups, while the ASAP analysis provided the partition of 48 groups. RESL analysis resulted in 63 operational taxonomic units (OTUs). This study expands our scant knowledge of anopheline species in the Yanomami and Pantanal regions. At least 18 species of Anophelinae mosquitoes were found in these study areas. Additional studies are now required to determine the species that transmit Plasmodium spp. in these regions.
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Affiliation(s)
- Teresa Fernandes Silva-do-Nascimento
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, Brazil; (T.F.S.-d.-N.); (J.S.-R.); (J.O.-F.); (M.G.R.-F.); (R.L.-d.-O.); (M.M.-e.-S.); (M.S.A.S.N.)
| | - Jordi Sánchez-Ribas
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, Brazil; (T.F.S.-d.-N.); (J.S.-R.); (J.O.-F.); (M.G.R.-F.); (R.L.-d.-O.); (M.M.-e.-S.); (M.S.A.S.N.)
- Laboratório de Imunoparasitologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, Brazil
- Distrito Sanitário Especial Indígena Yanomami, Roraima 69301-080, Brazil
| | - Tatiane M. P. Oliveira
- Departamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo 01246-904, Brazil;
| | - Brian Patrick Bourke
- Walter Reed Biosystematics Unit, Museum Support Center MRC-534, Smithsonian Institution, 4210 Silver Hill Rd., Suitland, MD 20746, USA;
- Walter Reed Army Institute of Research, 503 Robert Grant Avenue, Silver Spring, MD 20910, USA
- Department of Entomology, Smithsonian Institution—National Museum of Natural History, 10th St. NE & Constitution Ave. NE, Washington, DC 20002, USA
| | - Joseli Oliveira-Ferreira
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, Brazil; (T.F.S.-d.-N.); (J.S.-R.); (J.O.-F.); (M.G.R.-F.); (R.L.-d.-O.); (M.M.-e.-S.); (M.S.A.S.N.)
| | - Maria Goreti Rosa-Freitas
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, Brazil; (T.F.S.-d.-N.); (J.S.-R.); (J.O.-F.); (M.G.R.-F.); (R.L.-d.-O.); (M.M.-e.-S.); (M.S.A.S.N.)
- Geniac Ltd., São Paulo 01031-902, Brazil
| | - Ricardo Lourenço-de-Oliveira
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, Brazil; (T.F.S.-d.-N.); (J.S.-R.); (J.O.-F.); (M.G.R.-F.); (R.L.-d.-O.); (M.M.-e.-S.); (M.S.A.S.N.)
| | - Mariana Marinho-e-Silva
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, Brazil; (T.F.S.-d.-N.); (J.S.-R.); (J.O.-F.); (M.G.R.-F.); (R.L.-d.-O.); (M.M.-e.-S.); (M.S.A.S.N.)
- Instituto Nacional da Propriedade Industrial, Rio de Janeiro 20090-910, Brazil
| | - Maycon Sebastião Alberto Santos Neves
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro 21040-360, Brazil; (T.F.S.-d.-N.); (J.S.-R.); (J.O.-F.); (M.G.R.-F.); (R.L.-d.-O.); (M.M.-e.-S.); (M.S.A.S.N.)
| | - Jan E. Conn
- Wadsworth Center, New York State Department of Health, Albany, NY 12159, USA;
- Department of Biomedical Sciences, School of Public Health, State University of New York, Albany, NY 12222, USA
| | - Maria Anice Mureb Sallum
- Departamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo 01246-904, Brazil;
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Vieira G, Bersot MIL, Pereira GR, de Abreu FVS, Nascimento-Pereira AC, Neves MSAS, Rosa-Freitas MG, Motta MA, Lourenço-de-Oliveira R. High Speed Video Documentation of the Mosquito Sabethes albiprivus Egg-Catapulting Oviposition Behavior (Diptera: Culicidae). Neotrop Entomol 2020; 49:662-667. [PMID: 32588393 DOI: 10.1007/s13744-020-00782-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
The oviposition behavior of mosquitoes varies between species. We documented the unusual mechanism of egg laying in the mosquito Sabethes albiprivus Theobald with the aid of high speed video recordings in the laboratory. A sapucaia (Lecythis pisonis Camb.) nut oviposition trap, described herein, was used to simulate a tree hole with a small opening, which is the natural larval habitat of Sa. albiprivus. We showed that females approach the opening and perform a sequence of rapid, short up-and-down flights before egg laying. At this time, the egg is already visible externally, being held at the very tip of the abdomen. Females catapult one egg at a time by rapidly curling their abdomen downward, sending the egg through the opening while their legs are positioned in different configurations throughout the event. The estimated velocity of the catapulted eggs was almost 1 m/s.
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Affiliation(s)
- Genilton Vieira
- Serviço de Produção de Imagem, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Maria Ignez Lima Bersot
- Lab de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Glauber Rocha Pereira
- Lab de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Filipe Vieira Santos de Abreu
- Lab de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
- Instituto Federal do Norte de Minas Gerais, Salinas, MG, Brasil
| | | | | | - Maria Goreti Rosa-Freitas
- Lab de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Monique Albuquerque Motta
- Lab de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil
| | - Ricardo Lourenço-de-Oliveira
- Lab de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil.
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4
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Pezzi L, Diallo M, Rosa-Freitas MG, Vega-Rua A, Ng LFP, Boyer S, Drexler JF, Vasilakis N, Lourenco-de-Oliveira R, Weaver SC, Kohl A, de Lamballerie X, Failloux AB. GloPID-R report on chikungunya, o'nyong-nyong and Mayaro virus, part 5: Entomological aspects. Antiviral Res 2019; 174:104670. [PMID: 31812638 DOI: 10.1016/j.antiviral.2019.104670] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 11/28/2019] [Indexed: 10/25/2022]
Abstract
The GloPID-R (Global Research Collaboration for Infectious Disease Preparedness) chikungunya (CHIKV), o'nyong-nyong (ONNV) and Mayaro virus (MAYV) Working Group has been established to investigate natural history, epidemiology and clinical aspects of infection by these viruses. Here, we present a report dedicated to entomological aspects of CHIKV, ONNV and MAYV. Recent global expansion of chikungunya virus has been possible because CHIKV established a transmission cycle in urban settings using anthropophilic vectors such as Aedes albopictus and Aedes aegypti. MAYV and ONNV have a more limited geographic distribution, being confined to Africa (ONNV) and central-southern America (MAYV). ONNV is probably maintained through an enzootic cycle that has not been characterized yet, with Anopheles species as main vectors and humans as amplification hosts during epidemics. MAYV is transmitted by Haemagogus species in an enzootic cycle using non-human primates as the main amplification and maintenance hosts, and humans becoming sporadically infected when venturing in or nearby forest habitats. Here, we focused on the transmission cycle and natural vectors that sustain circulation of these viruses in their respective locations. The knowledge of the natural ecology of transmission and the capacity of different vectors to transmit these viruses is crucial to understand CHIKV emergence, and to assess the risk that MAYV and ONNV will expand on wide scale using anthropophilic mosquito species not normally considered primary vectors. Finally, the experts identified knowledge gaps and provided adapted recommendations, in order to address future entomological investigations in the right direction.
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Affiliation(s)
- L Pezzi
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection), Marseille, France; EA7310, Laboratoire de Virologie, Université de Corse-Inserm, Corte, France.
| | - M Diallo
- Unité d'Entomologie Médicale, Institut Pasteur de Dakar, Dakar, Senegal
| | - M G Rosa-Freitas
- Instituto Oswaldo Cruz-Fiocruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, Brazil
| | - A Vega-Rua
- Laboratory of Vector Control Research, Environment and Health Unit, Institut Pasteur de la Guadeloupe, Guadeloupe
| | - L F P Ng
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore
| | - S Boyer
- Medical Entomology Platform, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - J F Drexler
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Virology, 10117, Berlin, Germany; German Centre for Infection Research (DZIF), Germany
| | - N Vasilakis
- Department of Pathology, Institute of Human Infection and Immunity, University of Texas Medical Branch, Galveston, USA
| | - R Lourenco-de-Oliveira
- Instituto Oswaldo Cruz-Fiocruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, Brazil
| | - S C Weaver
- Institute for Human Infections and Immunity and Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, USA
| | - A Kohl
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - X de Lamballerie
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection), Marseille, France
| | - A-B Failloux
- Department of Virology, Institut Pasteur, Arboviruses and Insect Vectors Unit, Paris, France
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Pezzi L, Rodriguez-Morales AJ, Reusken CB, Ribeiro GS, LaBeaud AD, Lourenço-de-Oliveira R, Brasil P, Lecuit M, Failloux AB, Gallian P, Jaenisch T, Simon F, Siqueira AM, Rosa-Freitas MG, Vega Rua A, Weaver SC, Drexler JF, Vasilakis N, de Lamballerie X. GloPID-R report on chikungunya, o'nyong-nyong and Mayaro virus, part 3: Epidemiological distribution of Mayaro virus. Antiviral Res 2019; 172:104610. [PMID: 31545981 DOI: 10.1016/j.antiviral.2019.104610] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 09/17/2019] [Indexed: 12/12/2022]
Affiliation(s)
- L Pezzi
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection), Marseille, France; EA7310, Laboratoire de Virologie, Université de Corse-Inserm, Corte, France.
| | - A J Rodriguez-Morales
- Public Health and Infection Research Group, Faculty of Health Sciences, Universidad Tecnologica de Pereira, Pereira, Colombia
| | - C B Reusken
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands; Department Viroscience, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - G S Ribeiro
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Federal University of Bahia, Salvador, Brazil
| | - A D LaBeaud
- Department of Pediatrics, Division of Infectious Diseases, Stanford University School of Medicine, Stanford, USA
| | - R Lourenço-de-Oliveira
- Instituto Oswaldo Cruz-Fiocruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, Brazil
| | - P Brasil
- Instituto Nacional de Infectologia Evandro Chagas - Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - M Lecuit
- Institut Pasteur, Biology of Infection Unit, Inserm U1117, Paris Descartes University, Departement of Infectious Diseases and Tropical Medicine, Necker-Enfants Malades University Hospital, APHP, IHU Imagine, Paris, France
| | - A B Failloux
- Department of Virology, Institut Pasteur, Arboviruses and Insect Vectors Unit, Paris, France
| | - P Gallian
- Établissement Français du Sang Alpes Méditerranée, Marseille, France
| | - T Jaenisch
- Section Clinical Tropical Medicine, Department of Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany
| | - F Simon
- Laveran Military Teaching Hospital, Marseille, France
| | - A M Siqueira
- Instituto Nacional de Infectologia Evandro Chagas - Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - M G Rosa-Freitas
- Instituto Oswaldo Cruz-Fiocruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, Brazil
| | - A Vega Rua
- Laboratory of Vector Control Research, Environment and Health Unit, Institut Pasteur de la Guadeloupe, Guadeloupe
| | - S C Weaver
- Institute for Human Infections and Immunity and Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, USA
| | - J F Drexler
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Institute of Virology, 10117, Berlin, Germany; German Centre for Infection Research (DZIF), Germany
| | - N Vasilakis
- Department of Pathology, Institute of Human Infection and Immunity, University of Texas Medical Branch, Galveston, USA
| | - de Lamballerie X
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection), Marseille, France
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6
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Marinho-E-Silva M, Sallum MAM, Rosa-Freitas MG, Lourenço-de-Oliveira R, Silva-do-Nascimento TF. Anophelines species and the receptivity and vulnerability to malaria transmission in the Pantanal wetlands, Central Brazil. Mem Inst Oswaldo Cruz 2018; 113:87-95. [PMID: 29236930 PMCID: PMC5722263 DOI: 10.1590/0074-02760170175] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 08/12/2017] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Studies on malaria vectors in the Pantanal biome, Central Brazil, were conducted more than half a century ago. OBJECTIVES To update anopheline records and assess receptivity and vulnerability to malaria transmission. METHODS Five-day anopheline collections were conducted bimonthly in Salobra, Mato Grosso do Sul state, for one year. Indoors, mosquitoes were collected from their resting places, while in open fields, they were captured using protected human-baited and horse-baited traps near the house and at the Miranda River margin, respectively. Hourly biting activity outdoors was also assessed. Secondary data were collected on the arrival of tourists, economic projects, and malaria cases. FINDINGS A total of 24,894 anophelines belonging to 13 species were caught. The main Brazilian malaria vector Anopheles darlingi was the predominant species, followed by An. triannulatus s.l. Hourly variation in anopheline biting showed three main peaks occurring at sunset, around midnight, and at sunrise, the first and last being the most prominent. The highest density of all species was recorded near the river margin and during the transition period between the rainy and early dry seasons. This coincides with the time of main influx of outsider workers and tourists, whose activities mostly occur in the open fields and frequently start before sunrise and last until sunset. Some of these individuals originate from neighbouring malaria-endemic countries and states, and are likely responsible for the recorded imported and introduced malaria cases. MAIN CONCLUSION Pantanal is a malaria-prone area in Brazil. Surveillance and anopheline control measures must be applied to avoid malaria re-emergence in the region.
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Affiliation(s)
- Mariana Marinho-E-Silva
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Maria Anice Mureb Sallum
- Departamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Maria Goreti Rosa-Freitas
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Ricardo Lourenço-de-Oliveira
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
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Lima JBP, Galardo AKR, Bastos LS, Lima AWDS, Rosa-Freitas MG. MosqTent: An individual portable protective double-chamber mosquito trap for anthropophilic mosquitoes. PLoS Negl Trop Dis 2017; 11:e0005245. [PMID: 28278171 PMCID: PMC5344318 DOI: 10.1371/journal.pntd.0005245] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Here, we describe the development of the MosqTent, an innovative double-chamber mosquito trap in which a human being attracts mosquitoes while is protected from being bitten within the inner chamber of the trap, while mosquitoes are lured to enter an outer chamber where they are trapped. The MosqTent previously collected an average of 3,000 anophelines/man-hour compared to 240 anophelines/man-hour for the human landing catch (HLC), thereby providing high numbers of human host–seeking mosquitoes while protecting the collector from mosquito bites. The MosqTent performed well by collecting a high number of specimens of Anophelesmarajoara, a local vector and anthropophilic mosquito species present in high density, but not so well in collecting An. darlingi, an anthropophilic mosquito species considered the main vector in Brazil but is present in low-density conditions in the area. The HLC showed a higher efficiency in collecting An. darlingi in these low-density conditions. The MosqTent is light (<1 kg), portable (comes as a bag with two handles), flexible (can be used with other attractants), adaptable (can be deployed in a variety of environmental settings and weather conditions), and it can be used in the intra-, peri-, and in the extradomicile. Also, the MosqTent collected similar portions of parous females and anthropophilic mosquito species and collects specimens suitable for downstream analysis. Further developments may include testing for other fabric colors, different mesh sizes and dimensions for other hematophagous insects and conditions, additional chemical mosquito attractants, and even the replacement of the human attractant in favor of other attractants. MosqTent modifications that would allow the trap to be applied as a vector control tool with killing action could also be explored.
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Affiliation(s)
- José Bento Pereira Lima
- Laboratório de Fisiologia e Controle de Artrópodes Vetores, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
- Laboratório de Entomologia, Instituto de Biologia do Exército, Rio de Janeiro, Brazil
| | | | | | - Arthur Weiss da Silva Lima
- Laboratório de Fisiologia e Controle de Artrópodes Vetores, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
| | - Maria Goreti Rosa-Freitas
- Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
- * E-mail:
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Sánchez-Ribas J, Oliveira-Ferreira J, Rosa-Freitas MG, Trilla L, Silva-do-Nascimento TF. New classification of natural breeding habitats for Neotropical anophelines in the Yanomami Indian Reserve, Amazon Region, Brazil and a new larval sampling methodology. Mem Inst Oswaldo Cruz 2015; 110:760-70. [PMID: 26517655 PMCID: PMC4667579 DOI: 10.1590/0074-02760150168] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 08/05/2015] [Indexed: 01/19/2023] Open
Abstract
Here we present the first in a series of articles about the ecology of immature stages of anophelines in the Brazilian Yanomami area. We propose a new larval habitat classification and a new larval sampling methodology. We also report some preliminary results illustrating the applicability of the methodology based on data collected in the Brazilian Amazon rainforest in a longitudinal study of two remote Yanomami communities, Parafuri and Toototobi. In these areas, we mapped and classified 112 natural breeding habitats located in low-order river systems based on their association with river flood pulses, seasonality and exposure to sun. Our classification rendered seven types of larval habitats: lakes associated with the river, which are subdivided into oxbow lakes and nonoxbow lakes, flooded areas associated with the river, flooded areas not associated with the river, rainfall pools, small forest streams, medium forest streams and rivers. The methodology for larval sampling was based on the accurate quantification of the effective breeding area, taking into account the area of the perimeter and subtypes of microenvironments present per larval habitat type using a laser range finder and a small portable inflatable boat. The new classification and new sampling methodology proposed herein may be useful in vector control programs.
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Affiliation(s)
- Jordi Sánchez-Ribas
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de
Imunoparasitologia, Rio de Janeiro, RJ, Brasil
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Mosquitos
Transmissores de Hematozoários, Rio de Janeiro, RJ, Brasil
| | - Joseli Oliveira-Ferreira
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de
Imunoparasitologia, Rio de Janeiro, RJ, Brasil
| | - Maria Goreti Rosa-Freitas
- Fundação Oswaldo Cruz, Instituto Oswaldo Cruz, Laboratório de Mosquitos
Transmissores de Hematozoários, Rio de Janeiro, RJ, Brasil
| | - Lluís Trilla
- Institut de Recerca en Energia de Catalunya, Barcelona,
Spain
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9
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Lima JBP, Rosa-Freitas MG, Rodovalho CM, Santos F, Lourenço-de-Oliveira R. Is there an efficient trap or collection method for sampling Anopheles darlingi and other malaria vectors that can describe the essential parameters affecting transmission dynamics as effectively as human landing catches? - A Review. Mem Inst Oswaldo Cruz 2014; 109:685-705. [PMID: 25185008 PMCID: PMC4156462 DOI: 10.1590/0074-0276140134] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 07/09/2014] [Indexed: 11/24/2022] Open
Abstract
Distribution, abundance, feeding behaviour, host preference, parity status and human-biting and infection rates are among the medical entomological parameters evaluated when determining the vector capacity of mosquito species. To evaluate these parameters, mosquitoes must be collected using an appropriate method. Malaria is primarily transmitted by anthropophilic and synanthropic anophelines. Thus, collection methods must result in the identification of the anthropophilic species and efficiently evaluate the parameters involved in malaria transmission dynamics. Consequently, human landing catches would be the most appropriate method if not for their inherent risk. The choice of alternative anopheline collection methods, such as traps, must consider their effectiveness in reproducing the efficiency of human attraction. Collection methods lure mosquitoes by using a mixture of olfactory, visual and thermal cues. Here, we reviewed, classified and compared the efficiency of anopheline collection methods, with an emphasis on Neotropical anthropophilic species, especially Anopheles darlingi, in distinct malaria epidemiological conditions in Brazil.
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Affiliation(s)
- José Bento Pereira Lima
- Laboratório de Fisiologia e Controle de Artrópodes Vetores
- Laboratório de Entomologia, Instituto de Biologia do Exército, Rio de
Janeiro, RJ, Brasil
- Fundação de Medicina Tropical Doutor Heitor Vieira Dourado, Manaus, AM,
Brasil
| | - Maria Goreti Rosa-Freitas
- Laboratório de Transmissores de Hematozoários, Instituto Oswaldo
Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Cynara Melo Rodovalho
- Laboratório de Fisiologia e Controle de Artrópodes Vetores
- Laboratório de Entomologia, Instituto de Biologia do Exército, Rio de
Janeiro, RJ, Brasil
| | - Fátima Santos
- Odebrecht Angola - Projectos e Serviços Ltda, Luanda, Angola
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Codeço CT, Honório NA, Ríos-Velásquez CM, Santos MDCAD, Mattos IVD, Luz SB, Reis IC, Cunha GBD, Rosa-Freitas MG, Tsouris P, Castro MGD, Hayd RLN, Luitgards-Moura JF. Seasonal dynamics of Aedes aegypti (Diptera: Culicidae) in the northernmost state of Brazil: a likely port-of-entry for dengue virus 4. Mem Inst Oswaldo Cruz 2010; 104:614-20. [PMID: 19722086 DOI: 10.1590/s0074-02762009000400014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Accepted: 06/22/2009] [Indexed: 11/22/2022] Open
Abstract
Roraima is the northernmost state of Brazil, bordering both Venezuela and Guyana. Appropriate climate and vector conditions for dengue transmission together with its proximity to countries where all four dengue serotypes circulate make this state, particularly the capital Boa Vista, strategically important for dengue surveillance in Brazil. Nonetheless, few studies have addressed the population dynamics of Aedes aegypti in Boa Vista. In this study, we report temporal and spatial variations in Ae. aegypti population density using ovitraps in two highly populated neighbourhoods; Centro and Tancredo Neves. In three out of six surveys, Ae. aegypti was present in more than 80% of the sites visited. High presence levels of this mosquito suggest ubiquitous human exposure to the vector, at least during part of the year. The highest infestation rates occurred during the peak of the rainy seasons, but a large presence was also observed during the early dry season (although with more variation among years). Spatial distribution of positive houses changed from a sparse and local pattern to a very dense pattern during the dry-wet season transition. These results suggest that the risk of dengue transmission and the potential for the new serotype invasions are high for most of the year.
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Affiliation(s)
- Cláudia Torres Codeço
- Programa de Computação Científica-Fiocruz, Instituto Oswaldo Cruz-Fiocruz, 21045-900 Rio de Janeiro, Brasil.
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11
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de Barros FSM, de Aguiar DB, Rosa-Freitas MG, Luitgards-Moura JF, Gurgel HDC, Honório NA, de Arruda ME, Tsouris P, Vasconcelos SD. Distribution summaries of malaria vectors in the northern Brazilian Amazon. J Vector Ecol 2007; 32:161-167. [PMID: 18260503 DOI: 10.3376/1081-1710(2007)32[161:dsomvi]2.0.co;2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Knowledge of vector distribution is important for the design of effective local malaria control programs. Here we apply ecological niche modeling to analyze and predict the distributions of malaria vectors based on entomological collection points in the State of Roraima in the northern Brazilian Amazon Basin. Anopheline collections were conducted from 1999 to 2003 at 76 localities, all with active malaria transmission. A total of 13 anopheline species was identified from 17,074 adult females collected: Anopheles darlingi, An. albitarsis s.l., An. nuneztovari, An. triannulatus s.l., An. braziliensis, An. peryassui, An. oswaldoi s.l., An. mattogrossensis, An. strodei, An. evansae, An. squamifemur, An. mediopunctatus s.l, An. intermedius. Anopheles darlingi, and An. albitarsis were the most frequently found species. An. squamifemur was found for the first time in Roraima. A distributional prediction model (genetic algorithm for rule-set prediction-GARP) and environmental variables were used to predicted potential distribution range for six anopheline species that occurred at > or = 19 collection points. The method allows for the application of moderate sample sizes to produce distribution maps of vector species that could be used to maximize efficiency of surveys and optimize use of economic resources in epidemiology and control.
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Rosa-Freitas MG, Tsouris P, Peterson AT, Honório NA, de Barros FSM, de Aguiar DB, Gurgel HDC, de Arruda ME, Vasconcelos SD, Luitgards-Moura JF. An ecoregional classification for the state of Roraima, Brazil: the importance of landscape in malaria biology. Mem Inst Oswaldo Cruz 2007; 102:349-57. [PMID: 17568941 DOI: 10.1590/s0074-02762007005000052] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2007] [Accepted: 04/24/2007] [Indexed: 05/15/2023] Open
Abstract
Understanding the different background landscapes in which malaria transmission occurs is fundamental to understanding malaria epidemiology and to designing effective local malaria control programs. Geology, geomorphology, vegetation, climate, land use, and anopheline distribution were used as a basis for an ecological classification of the state of Roraima, Brazil, in the northern Amazon Basin, focused on the natural history of malaria and transmission. We used unsupervised maximum likelihood classification, principal components analysis, and weighted overlay with equal contribution analyses to fine-scale thematic maps that resulted in clustered regions. We used ecological niche modeling techniques to develop a fine-scale picture of malaria vector distributions in the state. Eight ecoregions were identified and malaria-related aspects are discussed based on this classification, including 5 types of dense tropical rain forest and 3 types of savannah. Ecoregions formed by dense tropical rain forest were named as montane (ecoregion I), submontane (II), plateau (III), lowland (IV), and alluvial (V). Ecoregions formed by savannah were divided into steppe (VI, campos de Roraima), savannah (VII, cerrado), and wetland (VIII, campinarana). Such ecoregional mappings are important tools in integrated malaria control programs that aim to identify specific characteristics of malaria transmission, classify transmission risk, and define priority areas and appropriate interventions. For some areas, extension of these approaches to still-finer resolutions will provide an improved picture of malaria transmission patterns.
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Affiliation(s)
- Maria Goreti Rosa-Freitas
- Laboratório de Transmissores de Hematozoários, Departamento de Entomologia, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, Brasil
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13
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Nagm L, Luitgards-Moura JF, Neucamp CDS, Monteiro-de-Barros FS, Honório NA, Tsouris P, Rosa-Freitas MG. Affinity and diversity indices for anopheline immature forms. Rev Inst Med Trop Sao Paulo 2007; 49:309-16. [DOI: 10.1590/s0036-46652007000500007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2006] [Accepted: 04/09/2007] [Indexed: 11/22/2022] Open
Abstract
As for the entire Amazon Region, malaria continues to be a major health public problem in Roraima that presented an Annual Parasitic Index of 85.4 in 2005, the highest in Brazil. Information on anopheline breeding sites is an essential component in malaria control strategies. Aiming to contribute to the limited knowledge on anopheline immature forms in Roraima, collections and breeding site observations were performed in 10 breeding sites around the capital city Boa Vista. Collections were carried out in the rainy and dry season periods between April 2004 and January 2005. Breeding sites comprised natural and artificial water reservoirs. A total of 623 immature forms were collected belonging to Anopheles albitarsis s.l., An.triannulatus s.l., An. nuneztovari/dunhami, An. braziliensis, An. evansae, An. oswaldoi s.l., An. strodei and An. darlingi. An. albitarsis and An. braziliensis were the most frequently found species. Eight larvae of An. darlingi were found in only one breeding site located in the forest. An. triannulatus/An. nuneztovari and An. albitarsis/An. braziliensis were the pairs of species that mostly occurred together. Both pair of species displayed the highest affinity index what might indicate a high compatibility for the same breeding conditions and/or a synergistic co-occurrence. Species diversity index was higher for the dry season.
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Affiliation(s)
- Lucy Nagm
- Universidade Federal de Roraima, Brasil
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Rosa-Freitas MG, Schreiber KV, Tsouris P, Weimann ETDS, Luitgards-Moura JF. Associations between dengue and combinations of weather factors in a city in the Brazilian Amazon. Rev Panam Salud Publica 2007; 20:256-67. [PMID: 17316484 DOI: 10.1590/s1020-49892006000900006] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES Dengue has become the most important endemic disease in Brazil. The Amazonian state of Roraima has one of the highest incidence rates of dengue in the country. The objective of this study was to determine whether significant temporal relationships exist between the number of reported dengue cases and short-term climate measures for the city of Boa Vista, the capital of Roraima. If such relationships exist, that suggests that it may be possible to predict dengue case numbers based on antecedent climate, thus helping develop a climate-based dengue early-warning system for Boa Vista. METHODS Seasonal Pearson product-moment correlations were developed between 3-week running averages of daily numbers of reported dengue cases for September 1998-December 2001 and certain meteorological variables (thermal, hydroclimatic, wind, atmospheric pressure, and humidity) up to 25 weeks before. Two-sample t tests were also applied to test for statistically significant differences between samples of daily dengue cases with above-average values and samples with below-average values for three-variable meteorological combinations. These multivariate combinations consisted of the three climate measures that together explained the greatest portion of the variance in the number of dengue cases for the particular season. RESULTS The strength of the individual averaged correlations varied from weak to moderate. The correlations differed according to the period of the year, the particular climatic variable, and the lag period between the climate indicator and the number of dengue cases. The seasonal correlations in our study showed far stronger relationships than had daily, full-year measures reported in previous studies. Two-sample t tests of multivariate meteorological combinations of atmospheric pressure, wind, and humidity values showed statistically significant differences in the number of reported dengue cases. CONCLUSIONS Relationships between climate and dengue are best analyzed for short, relevant time periods. Climate-based multivariate temporal stochastic analyses have the potential to identify periods of elevated dengue incidence, and they should be integrated into local control programs for vector-transmitted diseases.
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Affiliation(s)
- Maria Goreti Rosa-Freitas
- Instituto Oswaldo Cruz, Departamento de Entomologia, Laboratório de Transmissores de Hematozoários, Rio de Janeiro, Rio de Janeiro, Brasil; Freitas-Tsouris Consultants, Spata, Attica, Greece.
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15
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de Barros FSM, Arruda ME, Vasconcelos SD, Luitgards-Moura JF, Confalonieri U, Rosa-Freitas MG, Tsouris P, Lima-Camara TN, Honório NA. Parity and age composition for Anopheles darlingi root (Diptera: Culicidae) and Anopheles albitarsis Lynch-Arribálzaga (Diptera: Culicidae) of the northern Amazon Basin, Brazil. J Vector Ecol 2007; 32:54-68. [PMID: 17633426 DOI: 10.3376/1081-1710(2007)32[54:paacfa]2.0.co;2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Parity and age composition for Anopheles darlingi and Anopheles albitarsis in the northern Amazon Basin, Brazil, were investigated. Anopheline ovaries and ovarioles were examined in order to determine whether hourly and seasonal parity status for the vectors An. albitarsis and An. darlingi would vary in two different landscapes (forest and savanna/forest) where malaria is endemic in the northern Amazon Basin. A total of 1,199 anophelines (535 An. darlingi and 664 An. albitarsis) was dissected for parity status, ovariole dilatations, and follicular stages. The total number of nulliparous and parous females for both species varied by time of collection, locality, and season. During the rainy season for the first two h of collection, more nulliparous An. albitarsis and An. darlingi females were collected in the first hour (18:00-19:00), but during the second hour (19:00-20:00) more parous females of both species were captured. During the dry season in Copaíbas, more parous females of An. albitarsis were observed in the first hour while more nulliparous females were observed in the second hour. Nulliparous and parous females of both species for both hours were not significantly different at Road 19 in the dry season. This location was characterized by a forest malaria pattern of transmission with higher numbers of parous females and population stability in the dry season. In Copaíbas, the density and parity of An. darlingi increased during the rainy season, and it could be classified as an alluvial malaria pattern of transmission. For Copaíbas, control measures would be more successful if adopted at the transition from dry to rainy season. Further investigation on longitudinal spatio-temporal change in longevity and survival rates would help us to clarify differences in vector competence for An. darlingi and An. albitarsis and add to the understanding of differences regarding prevailing landscapes in malaria epidemiology in the northern Amazon Basin.
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Favier C, Degallier N, Rosa-Freitas MG, Boulanger JP, Costa Lima JR, Luitgards-Moura JF, Menkès CE, Mondet B, Oliveira C, Weimann ETS, Tsouris P. Early determination of the reproductive number for vector-borne diseases: the case of dengue in Brazil. Trop Med Int Health 2006; 11:332-40. [PMID: 16553913 DOI: 10.1111/j.1365-3156.2006.01560.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To evaluate a new method of deriving the reproductive number for vector-borne diseases from the early epidemic curves for vector-borne diseases with incubations in the vectors and in the hosts. METHOD We applied the model to several dengue epidemics in different climatic regions of Brazil: Brasilia, Belém, Fortaleza, Boa Vista. RESULTS The new method leads to higher estimates of the reproductive number than previous models. CONCLUSION At present, Aedes aegypti densities, the meeting of more compatible strains of viruses and mosquitoes, may lead to re-emergence of urban yellow fever epidemics.
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Affiliation(s)
- C Favier
- LOCEAN, UMR 7159-IRD/UR182, Paris, France.
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Luitgards-Moura JF, Vargas AB, Almeida CE, Magno-Esperança G, Agapito-Souza R, Folly-Ramos E, Costa J, Tsouris P, Rosa-Freitas MG. A Triatoma maculata (Hemiptera, Reduviidae, Triatominae) population from Roraima, Amazon region, Brazil, has some bionomic characteristics of a potential Chagas disease vector. Rev Inst Med Trop Sao Paulo 2005; 47:131-7. [PMID: 16021285 DOI: 10.1590/s0036-46652005000300003] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Even though Chagas disease is rare in the Brazilian Amazon, the conditions for the establishment of domiciliated cycles prevail in many areas where triatomines are of frequent occurrence. In Roraima, a previous serological and entomological survey in three agricultural settlements showed the existence of all transmission cycle elements, i.e., individuals infected by Trypanosoma cruzi, triatomine species previously found harboring T. cruzi in the broader Amazon region of neighboring countries and, domicile/ peridomicile conditions favorable to triatomine colonization. Triatoma maculata was the most frequent species, found in chicken houses in the peridomicile and sporadically within residences. Aiming to investigate the possibility of T. maculata to possess the potentiality to transmit T. cruzi in the area, bionomic characteristics were studied under laboratory conditions. These were feeding frequency, time for defecation after a blood meal, time elapsed in voluntary fasting pre- and pos-ecdysis, moulting time periods, pre-oviposition and oviposition periods and index of oviposition, incubation period, egg viability, longevity and mortality rate. Results show that the Passarão population of T. maculata should be considered a potential vector of T. cruzi since it shows a capacity to infest artificial ecotopes in the peridomicile, to carry out large number of meals during the nymphal cycle, to have a relatively short developmental cycle capable of producing 2.9 generations/year, to blood source eclecticism, to defecate immediately after the blood meal while still on the host and to the fact that has been previously found naturally infected by T. cruzi.
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Affiliation(s)
- José Francisco Luitgards-Moura
- Núcleo Avançado de Vetores, Universidade Federal de Roraima, Centro de Ciências Biológicas e da Saúde, Roraima, RR, Brasil
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Luitgards-Moura JF, Borges-Pereira J, Costa J, Zauza PL, Rosa-Freitas MG. On the possibility of autochthonous Chagas disease in Roraima, Amazon region, Brazil, 2000-2001. Rev Inst Med Trop Sao Paulo 2005; 47:45-54. [PMID: 15729474 DOI: 10.1590/s0036-46652005000100008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chagas disease has been almost entirely eradicated from the arid zones in Central and Northeastern Brazil where rare or no autochthonous cases have been reported. However, in the last 10 years the disease has increasingly been registered in the Amazon Region. Aiming to investigate the possibility of the occurrence of autochthonous cycle of Chagas disease in Roraima, triatomine collections, vectorial susceptibility studies (this one to be shown elsewhere), parasitological and serological analyses were conducted in three agricultural settlement areas (Rorainópolis, Passarão Project and Ilha Community). Blood-donor candidates were also investigated. This is the first epidemiological survey on Chagas disease conducted in agricultural settlements in Roraima. Triatomine species found were Triatoma maculata, Rhodnius pictipes, Rhodnius robustus and Panstrongylus geniculatus. Trypanosoma cruzi detection analyses included xenodiagnosis, indirect immunofluorescence, indirect hemaglutination, ELISA and kinetoplast PCR amplification. Natural triatomine infection was not found in intestinal contents. Twenty-five adult settlers (1.4% out of 1821, all > 15 year-old, 20 migrants) presented anti-T. cruzi antibodies. Two migrant settlers (from Minas Gerais and Maranhão) tested positive for more than two serological tests, besides either being positive for xenodiagnosis or PCR. Results show that Chagas disease is not endemic in the areas studied. However, all elements of the transmission cycle are present, demanding for an adequate and continuous vigilance.
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Affiliation(s)
- José Francisco Luitgards-Moura
- Convênio FIOCRUZ-UFRR, Universidade Federal de Roraima, Centro de Ciências Biológicas e da Saúde, BR 174 s/n Jardim Floresta, 69310-270, Boa Vista, Roraima, RR, Brazil
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Luitgards-Moura JF, Castellon Bermudez EG, Rocha AFID, Tsouris P, Rosa-Freitas MG. Preliminary assays indicate that Antonia ovata (Loganiaceae) and Derris amazonica (Papilionaceae), ichthyotoxic plants used for fishing in Roraima, Brazil, have an insecticide effect on Lutzomyia longipalpis (Diptera: Psychodidae: Phlebotominae). Mem Inst Oswaldo Cruz 2002; 97:737-42. [PMID: 12219144 DOI: 10.1590/s0074-02762002000500026] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Laboratory-reared Lutzomyia longipalpis (Lutz and Neiva 1912) was tested with extracts of two ichthyotoxic plants, known as timbós, used as fishing poison in the Amazon. Phlebotomines, L. longipalpis, and plants, Antonia ovata and Derris amazonica, were collected in the Raposa-Serra do Sol Indian Reserve, a focus of visceral leishmaniasis in the State of Roraima, Brazil. Extracts were prepared from dried leaves of A. ovata and roots of D. amazonica that were percolated in water, filtered and dried out at 50 degrees C. The solid extract obtained was diluted in water at 150, 200 and 250 mg/ml. The solution was blotted in filter paper placed at the bottom of cylindric glass tubes containing sand flies. For each plant extract and dilution, two series of triplicates with 5 male and 5 female specimens of L. longipalpis were used. Mortality was recorded every 2 h during 72 h of exposure. At 72 h the mortality was as high as 80% for extracts of A. ovata (LD50 = 233 mg/ ml), and 100% for D. amazonica (LD50 = 212 mg/ ml) whereas in the control groups maximum mortality never surpassed 13%. Preliminary assays indicated that A. ovata and D. amazonica displayed significant insecticide effect against L. longipalpis.
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da Silva-Vasconcelos A, Kató MYN, Mourão EN, de Souza RTL, Lacerda RNDL, Sibajev A, Tsouris P, Póvoa MM, Momen H, Rosa-Freitas MG. Biting indices, host-seeking activity and natural infection rates of anopheline species in Boa Vista, Roraima, Brazil from 1996 to 1998. Mem Inst Oswaldo Cruz 2002; 97:151-61. [PMID: 12016435 DOI: 10.1590/s0074-02762002000200002] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
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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Affiliation(s)
- Adenildo da Silva-Vasconcelos
- Núcleo Avançado de Vetores, Dentro de Ciências Biológicas e da Saúde, Universidade Federal de Roraima, Boa Vista, RR, Brasil
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21
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de Azevedo AC, Monteiro FA, Cabello PH, Souza NA, Rosa-Freitas MG, Rangel EF. Studies on populations of Lutzomyia longipalpis (Lutz & Neiva, 1912) (Diptera: Psychodidae: Phlebotominae) in Brazil. Mem Inst Oswaldo Cruz 2000; 95:305-22. [PMID: 10800188 DOI: 10.1590/s0074-02762000000300005] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Studies were performed on five Brazilian populations of Lutzomyia longipalpis: Salvaterra (PA), São José do Ribamar (MA), Canindé (CE), Natal (RN) and Gruta da Lapinha, Lagoa Santa (MG). No morphological differences were observed that could distinguish between these populations. Homogeneity tests showed that the allopatric populations display a certain heterogeneity and that the sympatric populations, with different patterns of spots, are homogeneous. The Student-Newman-Keuls test, represented by Euler-Venn diagrams, showed a disjunction between the populations from the north/northeast and the one from Gruta da Lapinha. Genetic distances between the four populations (excluding the Canindé population) were within the range of intrapopulational differences. The Gruta da Lapinha population displayed a heterozygotic deficiency that could be a consequence of high levels of inbreeding due to cryptic habits of living in a small cave. These results do not favor the hypothesis of a L. longipalpis species complex in Brazil, and the species should be considered high polymorphic.
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Affiliation(s)
- A C de Azevedo
- Departamento de Entomologia, Instituto Oswaldo Cruz, Rio de Janeiro, RJ, 21045-900, Brasil.
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Luitgards-Moura JF, Castellón Bermúdez EG, Rosa-Freitas MG. Aspects related to productivity for four generations of a Lutzomyia longipalpis laboratory colony. Mem Inst Oswaldo Cruz 2000; 95:251-7. [PMID: 10733749 DOI: 10.1590/s0074-02762000000200021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A closed colony of Lutzomyia longipalpis was established with specimens collected in the Raposa - Serra do Sol indian reservoir, one of the main foci of visceral leishmaniasis in the State of Roraima, Brazil. Biological observations were made on four generations of a L. longipalpis colony with emphasis on productivity. Aspects studied were the number of laid and retained eggs, and the number of adults (male and female) per generation. During the four generations the percentage of engorged females that laid eggs varied from 64.2% (third generation-F3) to 90.3% (second generation-F2). The mean number of eggs laid per female varied from 23.6 (F3) to 39. 9 (first generation-F1). The maximum number of eggs laid per female varied from 84 (F3) to 124 (F1). The mean number of retained eggs per female was 12.7 (parental generation-P and F1) to 22.1 (F2). The number of females exceeded the number of males in all generations. However, significant difference for male/female ratio was found only for F3. Fecundity rates were between 42.1 (F3) and 58.3 (F2). From a total of 439 blood-fed females, 355 females laid 12,257 eggs that yield 5,354 adults (2,525 males and 2,829 females) in four generations. F2 presented maximum productivity and fecundity rates.
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Conn JE, Rosa-Freitas MG, Luz SL, Momen H. Molecular population genetics of the primary neotropical malaria vector Anopheles darlingi using mtDNA. J Am Mosq Control Assoc 1999; 15:468-474. [PMID: 10612610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Samples of the neotropical malaria vector Anopheles darlingi from Bolivia, Brazil, and Venezuela were analyzed to test for differences in mitochondrial haplotype frequencies. With the use of molecular variance components and F-statistics, significant genetic variability of An. darlingi was found apportioned primarily among populations within regions or within populations, with regions defined either as biomes (n = 5) or ecoregions (n = 2). The Mantel analysis resulted in a significant correlation [Prob (r) = 0.009] between genetic and geographic distances, evidence that these populations are genetically isolated by distance. Such isolation could reflect differences in phenotypes for factors affecting vector capacity.
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Affiliation(s)
- J E Conn
- Department of Biology, University of Vermont, Burlington 05405, USA
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Rosa-Freitas MG, Lourenço-de-Oliveira R, de Carvalho-Pinto CJ, Flores-Mendoza C, Silva-do-Nascimento TF. Anopheline species complexes in Brazil. Current knowledge of those related to malaria transmission. Mem Inst Oswaldo Cruz 1998; 93:651-5. [PMID: 9830533 DOI: 10.1590/s0074-02761998000500016] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- M G Rosa-Freitas
- Departamento de Bioquímica e Biologia Molecular, Instituto Oswaldo Cruz, Rio de Janeiro, Brasil.
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Rosa-Freitas MG, Deane LM, Momen H. A morphological, isoenzymatic and behavioural study of ten populations of Anopheles(Nyssorhynchus) albitarsis Lynch-Arribalzaga, 1878 (Diptera: culicidae) including from the type-locality - Baradero, Argentina. Mem Inst Oswaldo Cruz 1990. [DOI: 10.1590/s0074-02761990000300004] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Abstract
Anopheles (Nyssorhynchus) deaneorum sp. n. is described from specimens collected in Guajará-Mirim, Rondônia state and Rio Branco, Acre state, Brazil, on human and animal baits, inside dwellings and from the progenies of engorged females. A detailed description of the shape of egg, external appearance of adult female and male, genitalias, female cibarial armature and complete chaetotaxy of pupa and larva show that it can be distinguished from Anopheles albitarsis from the type-locality and other areas by the paler general external appearance of the adult, the posterolateral tufts of scales, on the female abdominal terga and the branching of the outer anterior clypeal seta (3-C) of the fourth instar larva (as shown in illustrations). If species can also be distinguished from An. albitarsis from the type locality by the allele frequencies at 11 enzymic loci as represented by Nei's Genetic Distance.
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Abstract
Anopheles albitarsis neotype is described from specimens collected in Baradero, Argentina, in Shannon's trap, in horse and pig stables and on the progeny of engorded females. The description includes illustrations of adult female, male and female genitalias, scanning electron miscroscopy of the eggs and complete chaetotaxy of pupa and larva. The importance for electing a neotype is based on the realization that An. albitarsis is a complex of cryptic species. It is an attempt to provide typt-locality specimens with which other memebers of the group can be compared.
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Rosa-Freitas MG, Deane LM, Souza PSD, Momen H. Distintictive larvae of Anopheles albitarsis (Diptera: Culicidae). Mem Inst Oswaldo Cruz 1987. [DOI: 10.1590/s0074-02761987000100023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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