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      Estudio de Hantavirus seoul en una población humana y de roedores en un asentamiento precario de la Ciudad de Buenos Aires

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          Abstract

          Se realizó un estudio seroepidemiológico transversal para determinar la circulación de Hantavirus seoul, de distribución mundial y asociado con fiebre hemorrágica con síndrome renal (FHSR), en una población humana (n: 106) de un asentamiento precario de la ciudad de Buenos Aires y en una población de Rattus norvegicus, (n: 29) capturados en el peridomicilio. Se estudiaron además 35 personas, con igual relación epidemiológica, que eran asistidas por hipertensión arterial. La seroprevalencia de anticuerpos antihantavirus en los roedores fue del 31% mientras que no se encontraron indicios serológicos de infección en los humanos.

          Translated abstract

          A sero-epidemiological survey was conducted to detect evidence of the circulation of Hantavirus seoul. This virus of worldwide distribution is associated with hemorrhagic fever with renal syndrome. A total of 106 samples from people who live in a marginal area in Buenos Aires City and 29 Rattus norvegicus captured in the surroundings of their houses were tested for specific antibodies. Thirty five samples from hypertensive patients undergoing a follow up health program, living in the same neighbourhood, were also tested. The antibody prevalence in rodents was 31% while no evidence of infection was found in the human samples.

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          Hantaviruses: a global disease problem.

          Hantaviruses are carried by numerous rodent species throughout the world. In 1993, a previously unknown group of hantaviruses emerged in the United States as the cause of an acute respiratory disease now termed hantavirus pulmonary syndrome (HPS). Before than, hantaviruses were known as the etiologic agents of hemorrhagic fever with renal syndrome, a disease that occurs almost entirely in the Eastern Hemisphere. Since the discovery of the HPS-causing hantaviruses, intense investigation of the ecology and epidemiology of hantaviruses has led to the discovery of many other novel hantaviruses. Their ubiquity and potential for causing severe human illness make these viruses an important public health concern; we reviewed the distribution, ecology, disease potential, and genetic spectrum.
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            Serologic and genetic identification of Peromyscus maniculatus as the primary rodent reservoir for a new hantavirus in the southwestern United States.

            An outbreak of hantavirus pulmonary syndrome (HPS) in the southwestern United States was etiologically linked to a newly recognized hantavirus. Knowledge that hantaviruses are maintained in rodent reservoirs stimulated a field and laboratory investigation of 1696 small mammals of 31 species. The most commonly captured rodent, the deer mouse (Peromyscus maniculatus), had the highest antibody prevalence (30%) to four hantavirus antigens. Antibody also was detected in 10 other species of rodent and in 1 species of rabbit. Reverse transcriptase-polymerase chain reaction (RT-PCR) products of hantavirus from rodent tissues were indistinguishable from those from human HPS patients. More than 96% of the seropositive P. maniculatus were positive by RT-PCR, suggesting chronic infection. Antibody prevalences were similar among P. maniculatus trapped from Arizona (33%), New Mexico (29%), and Colorado (29%). The numeric dominance of P. maniculatus, the high prevalence of antibody, and the RT-PCR findings implicate this species as the primary rodent reservoir for a new hantavirus in the southwestern United States.
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              Genetic diversity and epidemiology of hantaviruses in Argentina.

              Phylogenetic analysis of a 292-nucleotide (nt) fragment of the hantavirus M genome segment from 36 rodent and 13 human samples from three known foci of hantavirus infection in Argentina was conducted. A 1654-nt fragment of the M genome segment was analyzed for 1 representative of 7 genetically distinct hantavirus lineages identified. Additionally, the nt sequence of the complete M genome segments of Lechiguanas, Oran, and Hu39694 hantavirus genotypes was determined. nt sequence comparisons reveal that 7 hantavirus lineages from Argentina differ from each other by 11.5%-21.8% and from Sin Nombre, Bayou, and Black Creek Canal viruses by 23.8%-26.5%. Phylogenetic analyses demonstrate that they form a unique, separate branch within the clade containing other New World sigmodontine-borne hantaviruses. Most Oligoryzomys-borne hantavirus genotypes clearly map together. The Oligoryzomys-borne genotypes Lechiguanas, Oran, and Andes appear to be associated with human disease. Oligoryzomys longicaudatus was identified as the likely rodent reservoir for Andes virus.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                medba
                Medicina (Buenos Aires)
                Medicina (B. Aires)
                Fundación Revista Medicina (Ciudad Autónoma de Buenos Aires, , Argentina )
                0025-7680
                1669-9106
                June 2003
                : 63
                : 3
                : 193-196
                Affiliations
                [01] Buenos Aires orgnameHospital FJ Muñiz orgdiv1Servicio de Zoonosis
                [02] Pergamino orgnameInstituto Nacional de Enfermedades Virales Humanas, INEVH Dr. Julio I. Maiztegui
                [03] orgnameFundación Mundo Sano
                [04] Buenos Aires orgnameCentro de Salud Nº 18
                Article
                S0025-76802003000300001
                f62717f0-c552-486c-9cd5-3036cf4472ec

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 07 April 2003
                : 24 February 2003
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 26, Pages: 4
                Product

                SciELO Argentina


                Buenos Aires,Hantavirus,Seoul virus,Rodents,Virus Seoul,Roedores

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