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1.
Emerg Microbes Infect ; : 1-52, 2020 Dec 11.
Artículo en Inglés | MEDLINE | ID: mdl-33306459

RESUMEN

COVID-19 is a respiratory illness caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and declared by the World Health Organization a global public health emergency. Among the severe outbreaks across South America, Uruguay has become known for curtailing SARS-CoV-2 exceptionally well. To understand the SARS-CoV-2 introductions, local transmissions, and associations with genomic and clinical parameters in Uruguay, we sequenced the viral genomes of 44 outpatients and inpatients in a private healthcare system in its capital, Montevideo, from March to May 2020. We performed a phylogeographic analysis using sequences from our cohort and other studies that indicate a minimum of 23 independent introductions into Uruguay, resulting in five major transmission clusters. Our data suggest that most introductions resulting in chains of transmission originate from other South American countries, with the earliest seeding of the virus in late February 2020, weeks before the borders were closed to all non-citizens and a partial lockdown implemented. Genetic analyses suggest a dominance of S and G clades (G, GH, GR) that make up >90% of the viral strains in our study. In our cohort, lethal outcome of SARS-CoV-2 infection significantly correlated with arterial hypertension, kidney failure, and ICU admission (FDR < 0.01), but not with any mutation in a structural or non-structural protein, such as the spike D614G mutation. Our study contributes genetic, phylodynamic, and clinical correlation data about the exceptionally well-curbed SARS-CoV-2 outbreak in Uruguay, which furthers the understanding of disease patterns and regional aspects of the pandemic in Latin America.

3.
Rev. urug. cardiol ; 35(3): 87-106, dic. 2020. tab, graf
Artículo en Español | LILACS-Express | LILACS | ID: biblio-1145077

RESUMEN

Resumen: Introducción y objetivos: como consecuencia de la pandemia COVID-19 se ha comprobado una reducción de la actividad cardiológica intervencionista. El objetivo de esta encuesta fue cuantificar esta disminución y el impacto en el manejo del infarto agudo de miocardio con elevación del segmento ST (IAMceST) en Uruguay. Método: se realizó una encuesta telemática a los centros de hemodinamia de Uruguay, contextualizada en una encuesta latinoamericana. Se registraron los cateterismos diagnósticos, las intervenciones coronarias y estructurales, así como la percepción de la asistencia del IAMceST y sobre la afección por el virus SARS-CoV-2 del personal de cardiología intervencionista. Se compararon dos periodos del año 2020: 24 de febrero al 8 de marzo (pre COVID-19) y 23 de marzo al 5 de abril (COVID-19). Resultados: respondieron todos los centros del país (n=8). Hubo una clara disminución en el número de procedimientos diagnósticos (36,1%), angioplastias coronarias (20,3%), intervenciones estructurales (88,9%) y angioplastias en IAMceST (37,3%). Se observó una disminución del diagnóstico y según la percepción de los encuestados, una mayor demora en reperfundir al IAMceST. Un centro reportó infección por SARS-CoV-2 en su personal. Si bien hubo una disminución de la actividad en todos los centros, el comportamiento fue homogéneo. Conclusiones: se observó una reducción importante de la actividad asistencial cardiológica intervencionista durante el inicio de la epidemia COVID-19 y una gran disminución en el número de pacientes tratados con IAMceST.


Summary: Introduction and objectives: because of the COVID-19 pandemic, a reduction in activity has been verified in interventional cardiology. The objective of this survey was to quantify this decrease and the impact on the management of ST-elevation myocardial infarction in Uruguay. Methods: a telematic survey was carried out in Uruguay, in the context of a Latin American countries survey. Diagnostic catheterizations, coronary and structural interventions were recorded, as well as the perception of STEMI attendance and SARS-CoV-2 involvement of the health care staff. Two periods of 2020 were compared: 1st from February 24th to March 8th (pre COVID-19) and the 2nd from March 23rd to April 5th (COVID-19). Results: response was obtained from all centers (n=8) of the country. There was a significant decrease in the number of diagnostic procedures (36.1%), coronary interventions (20.3%), structural therapy (88.9%) and PCI in STEMI (37.3%). Less use of thrombolysis was indicated and a perception of respondents of longer delay to reperfusion. One center reported SARS-CoV-2 infection. Although there was a varied decrease in activity between the different centers, the behavior was homogeneous. Conclusions: a significant reduction in healthcare activity was observed during the COVID-19 epidemic and a great decrease in the number of patients treated with STEMI.


Resumo: Introdução e objetivos: como conseqüência da pandemia do COVID-19, uma redução na atividade foi observada na cardiologia intervencionista. O objetivo desta pesquisa foi quantificar essa diminuição e o impacto no manejo do infarto agudo do miocárdio com supradesnivelamento de segmento ST no Uruguai. Métodos: uma pesquisa telemática foi realizada em centros hemodinâmicos do Uruguai, no contexto de uma pesquisa latino-americana. Foram registrados cateterismos diagnósticos, intervenções coronárias e estruturais, bem como a percepção de assistência para infarto agudo do miocárdio e sobre a condição COVID-19 da equipe de cardiologia intervencionista. Foram comparados dois períodos do ano 2020: 24 de fevereiro a 8 de março (pré COVID-19) e 23 de março a 5 de abril (COVID-19). Resultados: todos os centros (n = 8) do país responderam. Houve uma diminuição significativa no número de procedimentos diagnósticos (36,1%), angioplastias coronárias (20,3%), intervenções estruturais (88,9%) e angioplastia no IAMEST (37,3%). Foi observada uma diminuição no diagnóstico e uma percepção dos entrevistados de um maior atraso na reperfusão do IAMceST. Um centro relatou infecção por SARS-CoV-2. Embora tenha havido uma diminuição variada da atividade entre os diferentes centros, o comportamento foi homogêneo. Conclusões: observou-se uma redução significativa da atividade assistencial durante a epidemia COVID-19 e uma grande diminuição no número de pacientes tratados com IAMEST.

4.
s.l; Ministerio de Salud; dic 04, 2020. 26 p.
No convencional en Español | LILACS | ID: biblio-1140727

RESUMEN

El presente informe brinda la actualización de la situación epidemiológica nacional en referencia a COVID-19, con la información disponible de las diferentes estrategias de vigilancia epidemiológica actualmente vigentes en el país. A la fecha la OMS reporta la ocurrencia de 69.027.093 casos confirmados en todo el mundo, con 1.572.162 defunciones. Se han reportado casos en 190 países


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Anciano , Neumonía Viral/epidemiología , Infecciones por Coronavirus/epidemiología , Pandemias/estadística & datos numéricos , Monitoreo Epidemiológico , Uruguay/epidemiología
5.
s.l; Ministerio de Salud; dic. 04, 2020. 26 p.
No convencional en Español | LILACS | ID: biblio-1140286

RESUMEN

El presente informe brinda la actualización de la situación epidemiológica nacional en referencia a COVID-19, con la información disponible de las diferentes estrategias de vigilancia epidemiológica actualmente vigentes en el país. A la fecha la OMS reporta la ocurrencia de 64.015.351 casos confirmados en todo el mundo, con 1.483.676 defunciones. Se han reportado casos en 190 países.


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Anciano , Neumonía Viral/epidemiología , Infecciones por Coronavirus/epidemiología , Pandemias/prevención & control , Monitoreo Epidemiológico , Uruguay/epidemiología
6.
s.l; Organización Panamericana de la Salud; oct. 28, 2020. 2 p.
No convencional en Español | LILACS | ID: biblio-1127900

RESUMEN

De acuerdo con la información proporcionada por el Ministerio de Salud Pública (MSP), desde que se declaró la emergencia sanitaria el 13 de marzo se han realizado un total de 310.963 pruebas diagnóstica, registrando 2981 casos positivos confirmados de coronavirus COVID-19. Mas del 80% de los casos confirmados se consideran recuperados a la fecha.


Asunto(s)
Humanos , Neumonía Viral/epidemiología , Infecciones por Coronavirus/epidemiología , Pandemias/prevención & control , Betacoronavirus , Uruguay/epidemiología
7.
medRxiv ; 2020 Oct 11.
Artículo en Inglés | MEDLINE | ID: mdl-33052352

RESUMEN

COVID-19 is a respiratory illness caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and declared by the World Health Organization a global public health emergency. Among the severe outbreaks across South America, Uruguay has become known for curtailing SARS-CoV-2 exceptionally well. To understand the SARS-CoV-2 introductions, local transmissions, and associations with genomic and clinical parameters in Uruguay, we sequenced the viral genomes of 44 outpatients and inpatients in a private healthcare system in its capital, Montevideo, from March to May 2020. We performed a phylogeographic analysis using sequences from our cohort and other studies that indicate a minimum of 23 independent introductions into Uruguay, resulting in five major transmission clusters. Our data suggest that most introductions resulting in chains of transmission originate from other South American countries, with the earliest seeding of the virus in late February 2020, weeks before the borders were closed to all non-citizens and a partial lockdown implemented. Genetic analyses suggest a dominance of S and G clades (G, GH, GR) that make up >90% of the viral strains in our study. In our cohort, lethal outcome of SARS-CoV-2 infection significantly correlated with arterial hypertension, kidney failure, and ICU admission (FDR < 0.01), but not with any mutation in a structural or non-structural protein, such as the spike D614G mutation. Our study contributes genetic, phylodynamic, and clinical correlation data about the exceptionally well-curbed SARS-CoV-2 outbreak in Uruguay, which furthers the understanding of disease patterns and regional aspects of the pandemic in Latin America.

8.
BMJ ; 370: m3693, 2020 Sep 22.
Artículo en Inglés | MEDLINE | ID: mdl-32962985
9.
BMJ ; 370: m3575, 2020 09 18.
Artículo en Inglés | MEDLINE | ID: mdl-32948599
10.
s.l; Ministerio de Salud Pública; jul. 18, 2020. 20 p.
No convencional en Español | LILACS | ID: biblio-1129827

RESUMEN

El presente informe brinda la actualización de la situación epidemiológica nacional en referencia a COVID-19, con la información disponible de las diferentes estrategias de vigilancia epidemiológica actualmente vigentes en el país. A la fecha la OMS reporta la ocurrencia de 56.817.667 casos confirmados en todo el mundo, con 1.358.489 defunciones. Se han reportado casos en 191 paíse


Asunto(s)
Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Anciano , Neumonía Viral/epidemiología , Infecciones por Coronavirus/epidemiología , Pandemias/prevención & control , Monitoreo Epidemiológico , Uruguay/epidemiología
14.
Rev. urug. cardiol ; 35(2): 53-67, 2020. tab, graf
Artículo en Español | LILACS-Express | LILACS | ID: biblio-1127264

RESUMEN

Resumen: Introducción: la pandemia COVID-19 ha determinado la aplicación de medidas sanitarias de emergencia, tendientes a evitar la progresión a nivel nacional. Reportes internacionales han sugerido que dichas medidas determinaron secundariamente una desatención en otras patologías, principalmente cardiovasculares, y eventual aumento de paros cardíacos extrahospitalarios (PCEH). Objetivo: determinar la frecuencia de consultas en emergencia por dolor precordial a nivel nacional y de PCEH asistidos por los principales servicios de emergencia prehospitalaria (SEP) de Montevideo, durante la pandemia. Método: se solicitó información del número de consultas por dolor precordial y de consultas totales, a las instituciones médicas de Montevideo y del interior del país, realizadas en el período comprendido entre el 13 de marzo y el 30 de abril de los años 2018, 2019 y 2020. Se solicitó a los SEP información sobre la frecuencia de PCEH en Montevideo durante los mismos períodos. Los datos se expresan como frecuencia absoluta y tasa de incidencia (por 100.000 afiliados) con su intervalo de confianza estimado mediante Fisher. Resultados: el número de consultas por dolor precordial fue estable durante el período 2018-2019. Durante 2020, dichas consultas disminuyeron, representando entre 11,3% y 21,7% del total de consultas. Se evidenció un aumento no significativo en la tasa de PCEH en el 2020 (9,05, IC95%: 7,15-11,30) comparado con el 2019 (7,94, IC95%: 6,19-10,04) y 2018 (7,43, IC95%: 5,75-9,45). Conclusiones: los datos crudos presentados muestran que desde el 13 de marzo hasta el 30 de abril de 2020 hubo una disminución en las consultas en emergencia por dolor precordial, aumentando de forma no significativa el número de PCEH durante el mes de abril, respecto al mismo período de los dos años anteriores.


Summary: Introduction: the COVID-19 pandemic has determined the application of emergency health measures aimed at preventing progression at national level. International reports have suggested that these measures lead to a lack of care in other pathologies, mainly cardiovascular, and eventually increase out-of-hospital cardiac arrests. Objective: to determine the frequency of emergency consultation for chest pain and out-of-hospital cardiac arrests, assisted by the main pre-hospital emergency services of Montevideo, during the COVID-19 pandemic. Methods: information was requested to the medical institutions of Montevideo and all over the country, on the number of consultations for chest pain and total consultations, in the period March 13- April 30 of 2018, 2019 and 2020. The frequency of out-of-hospital cardiac arrests in Montevideo was requested to the pre-hospital emergency services during the same period. The data is expressed as absolute frequency and incidence rates (x 100,000) with its 95% CI calculated by Fisher. Results: the number of consultations for precordial pain was stable during the 2018-2019 period. During 2020, these consultations decreased and represented between 11.3% and 21.7% of the total number of consultations. Out-of-hospital cardiac arrests showed a non significant increase in its incidence rate in 2020 (9.05, 95%IC: 7.15-11.30) compared with 2019 (7.94, 95%IC: 6.19-10.04) and 2018 (7.43, 95%IC: 5.75-9.45). Conclusions: the raw data presented shows that from March 13 to April 30 of 2020, there was a decrease in emergency visits for precordial pain and a non-significant increase in the incidence rate of out-of-hospital cardiac arrests.


Resumo: Introdução: a pandemia do COVID-19 determinou a aplicação de medidas emergenciais de saúde destinadas a impedir a progressão em nível nacional. Relatórios internacionais sugerem que essas medidas levam à falta de atendimento em outras patologias, principalmente cardiovasculares, e eventualmente aumentam as paradas cardíacas fora do hospital. Objetivo: determinar a frequência da consulta de emergência para dor no peito e paradas cardíacas fora do hospital, assistidas pelos principais serviços de emergência pré-hospitalar de Montevidéu, durante a pandemia do COVID-19. Métodos: foram solicitadas informações às instituições médicas de Montevidéu e de todo o país sobre o número de consultas para dor no peito e total de consultas, no período de 13 de março a 30 de abril de 2018, 2019 e 2020. A frequência de -as paradas cardíacas no hospital foram solicitadas aos serviços de emergência pré-hospitalares durante o mesmo período. Os dados são expressos como frequência absoluta e taxa de incidência (x 100.000) com seu intervalo de confiança estimado por Fisher. Resultados: o número de consultas para dor precordial permaneceu estável no período 2018-2019. Durante 2020, essas consultas representaram entre 11,3% e 21,7% do número total de consultas. Um aumento não significativo da taxa de paradas cardíacas fora do hospital foi evidente em 2020 (9,05, IC 95%: 7,15-11,30) em comparação com 2019 (7,94, IC 95%: 6,19-10,04) e 2018 (7,43, 95%IC: 5,75-9,45), o que não é significativo. Conclusões: os dados brutos apresentados mostram que de 13 de março a 30 de abril de 2020 houve uma diminuição nas visitas de emergência por dor precordial, não aumentando significativamente o número de paradas cardíacas fora do hospital em comparação aos dois anos anteriores.

15.
Acta odontol. Colomb. (En linea) ; 10(Supl. Covid-19): 33-46, 20200000. graf, graf, graf, graf, graf
Artículo en Español | LILACS, COLNAL | ID: biblio-1141080

RESUMEN

Objetivo: analizar los datos epidemiológicos y las medidas generales en la práctica odontológica tomadas por Colombia y Uruguay durante la pandemia por la COVID-19. Métodos: este trabajo es una revisión de la literatura. Se consultaron las bases de datos "PubMed", "Scielo" y el motor de búsqueda "Google Scholar". También se consultaron bases de datos de libre acceso como google, our world in data y las páginas oficiales de la Organización Mundial de la Salud, el Ministerio de Salud de Colombia, el Instituto Nacional de Salud y el Ministerio de Salud Pública de Uruguay. Se realizó un análisis descriptivo del comportamiento epidemiológico y de las medidas tomadas en la práctica odontológica en los dos países. Resultados: en Colombia, a diario, se presentan más de 3.000 casos nuevos y más de 100 muertes. Lo contrario ocurre en Uruguay, que ha logrado disminuir las tasas de contagio y de muertes, presentando menos de 10 casos y ninguna muerte diaria. Los profesionales de la salud han incrementado su lucha; los odontólogos se encuentran expuestos por su proximidad al momento de la atención, en el contacto con saliva, sangre y la generación de aerosoles, por lo que han modificado los protocolos de bioseguridad buscando prevenir los contagios asociados a la prestación de servicio. Conclusiones: Uruguay ha tenido un comportamiento ejemplar ante la pandemia; en Colombia los resultados son preocupantes dado el crecimiento exponencial. En ambos países la práctica odontológica se ha visto afectada y se han implementado nuevos protocolos para proteger a profesionales y pacientes.


Objective: Analyze the epidemiological data, general and dental practice measures taken by Colombia and Uruguay in the face of the COVID-19 pandemic. Methods: This study is a review. We search in the databases "PubMed", "Scielo" and in the search engine "Google Scholar". Also, were consulted the free databases like google, our world in data and the official pages of the World Health Organization, Ministry of Health of Colombia, The National institute of health and the Ministry of public Health of Uruguay. A descriptive analysis of the epidemiological behavior and the measures taken of dental practice in both countries was done. Results: Colombia had more than 3,000 new cases and more than 100 deaths daily. The opposite occurs in Uruguay, which has managed to decrease the infection and death rates, presenting less than 10 cases and no daily deaths. The struggles experienced by health professionals has increased, dentists are exposed, by their proximity at the time of care, to contact with saliva, blood and the generation of aerosols, therefore, they have modified the biosafety protocols, seeking to prevent infections associated with the practice. Conclusions: Uruguay has an exemplary behavior; in Colombia these results are worrying with an exponential growth. In both countries, dental practice has been affected and new protocols have been implemented that seek to protect the professionals and patients.


Asunto(s)
Humanos , Masculino , Femenino , Infecciones por Coronavirus , Odontología General , Epidemiología , Atención Odontológica , Crecimiento Exponencial , Protocolos , Pandemias
16.
Arch Virol ; 165(1): 145-156, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31745717

RESUMEN

Bovine viral diarrhea virus (BVDV) is a major pathogen worldwide, causing significant economic losses to the livestock sector. In Uruguay, BVDV seroprevalence at the farm level is >80%. In this work, 2546 serum, blood or tissue samples collected from animals suspected of being affected by BVD between 2015 and 2017 were analyzed by reverse transcription PCR and sequencing. Analysis of the BVDV genomic regions 5'UTR/Npro, Npro and E2 revealed that BVDV-1a, 1i and 2b circulate in the country, with BVDV-1a being the most prevalent subtype. Population dynamics studies revealed that BVDV-1a has been circulating in our herds since ~1990. This subtype began to spread and evolve, accumulating point mutations at a rate of 3.48 × 10-3 substitutions/site/year, acquiring specific genetic characteristics that gave rise to two local genetic lineages of BVDV-1a. These lineages are divergent from those circulating worldwide, as well as the vaccine strain currently used in Uruguay. The most notable differences between field and vaccine strains were found in the E2 glycoprotein, suggesting that the amino acid substitutions could result in failure of cross-protection/neutralization after vaccination. This is the first study that compares Uruguayan BVDV field and vaccine strains with other BVDV strains from throughout the world. The results obtained in this study will be very useful for developing a suitable immunization program for BVDV in Uruguay by identifying local field strains as candidates for vaccine development.


Asunto(s)
Virus de la Diarrea Viral Bovina/clasificación , Mutación Puntual , Análisis de Secuencia de ARN/métodos , Sustitución de Aminoácidos , Animales , Bovinos , Virus de la Diarrea Viral Bovina/genética , Virus de la Diarrea Viral Bovina/inmunología , Evolución Molecular , Filogenia , Estudios Seroepidemiológicos , Uruguay , Proteínas del Envoltorio Viral/genética , Proteínas del Envoltorio Viral/inmunología , Vacunas Virales/inmunología
17.
Arch Virol ; 164(11): 2715-2724, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31456086

RESUMEN

Bovine coronavirus (BCoV) is a recognized cause of severe neonatal calf diarrhea, with a negative impact on animal welfare, leading to economic losses to the livestock industry. Cattle production is one of the most important economic sectors in Uruguay. The aim of this study was to determine the frequency of BCoV infections and their genetic diversity in Uruguayan calves and to describe the evolutionary history of the virus in South America. The overall detection rate of BCoV in Uruguay was 7.8% (64/824): 7.7% (60/782) in dairy cattle and 9.5% (4/42) in beef cattle. The detection rate of BCoV in samples from deceased and live calves was 10.0% (6/60) and 7.6% (58/763), respectively. Interestingly, there was a lower frequency of BCoV detection in calves born to vaccinated dams (3.3%, 8/240) than in calves born to unvaccinated dams (12.2%, 32/263) (OR: 4.02, 95%CI: 1.81-8.90; p = 0.00026). The frequency of BCoV detection was higher in colder months (11.8%, 44/373) than in warmer months (1.5%, 3/206) (OR: 9.05, 95%CI: 2.77-29.53, p = 0.000013). Uruguayan strains grouped together in two different lineages: one with Argentinean strains and the other with Brazilian strains. Both BCoV lineages were estimated to have entered Uruguay in 2013: one of them from Brazil (95%HPD interval: 2011-2014) and the other from Argentina (95%HPD interval: 2010-2014). The lineages differed by four amino acid changes, and both were divergent from the Mebus reference strain. Surveillance should be maintained to detect possible emerging strains that can clearly diverge at the antigenic level from vaccine strains.


Asunto(s)
Antígenos Virales/genética , Enfermedades de los Bovinos/epidemiología , Infecciones por Coronavirus/epidemiología , Infecciones por Coronavirus/veterinaria , Coronavirus Bovino/aislamiento & purificación , Animales , Antígenos Virales/inmunología , Argentina/epidemiología , Brasil/epidemiología , Bovinos , Enfermedades de los Bovinos/prevención & control , Enfermedades de los Bovinos/virología , Infecciones por Coronavirus/prevención & control , Coronavirus Bovino/genética , ADN Viral/genética , Disentería/epidemiología , Disentería/veterinaria , Disentería/virología , Variación Genética/genética , Uruguay/epidemiología , Vacunación
18.
Infect Genet Evol ; 54: 245-250, 2017 10.
Artículo en Inglés | MEDLINE | ID: mdl-28705717

RESUMEN

Infectious bronchitis virus (Gammacoronavirus, Coronaviridae) is a genetically variable RNA virus that causes one of the most persistent respiratory diseases in poultry. The virus is classified in genotypes and lineages with different epidemiological relevance. Two lineages of the GI genotype (11 and 16) have been widely circulating for decades in South America. GI-11 is an exclusive South American lineage while the GI-16 lineage is distributed in Asia, Europe and South America. Here, we obtained the whole genome of two Uruguayan strains of the GI-11 and GI-16 lineages using Illumina high-throughput sequencing. The strains here sequenced are the first obtained in South America for the infectious bronchitis virus and provide new insights into the origin, spreading and evolution of viral variants. The complete genome of the GI-11 and GI-16 strains have 27,621 and 27,638 nucleotides, respectively, and possess the same genomic organization. Phylogenetic incongruence analysis reveals that both strains have a mosaic genome that arose by recombination between Euro Asiatic strains of the GI-16 lineage and ancestral South American GI-11 viruses. The recombination occurred in South America and produced two viral variants that have retained the full-length S1 sequences of the parental lineages but are extremely similar in the rest of their genomes. These recombinant virus have been extraordinary successful, persisting in the continent for several years with a notorious wide geographic distribution. Our findings reveal a singular viral dynamics and emphasize the importance of complete genomic characterization to understand the emergence and evolutionary history of viral variants.


Asunto(s)
Infecciones por Coronavirus/veterinaria , Genoma Viral , Genómica , Virus de la Bronquitis Infecciosa/clasificación , Virus de la Bronquitis Infecciosa/genética , Enfermedades de las Aves de Corral/virología , Recombinación Genética , Animales , Biología Computacional/métodos , Bases de Datos Genéticas , Evolución Molecular , Orden Génico , Genómica/métodos , Secuenciación de Nucleótidos de Alto Rendimiento , Anotación de Secuencia Molecular , Filogenia , ARN Viral , América del Sur
19.
J Gen Virol ; 96(Pt 6): 1340-6, 2015 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-25667323

RESUMEN

Infectious bronchitis virus (IBV) is a coronavirus of chickens that causes great economic losses to the global poultry industry. The present study focuses on South American IBVs and their genetic relationships with global strains. We obtained full-length sequences of the S1 coding region and N gene of IBV field isolates from Uruguay and Argentina, and performed Phylodynamic analysis to characterize the strains and estimate the time of the most recent common ancestor. We identified two major South American genotypes, which were here denoted South America I (SAI) and Asia/South America II (A/SAII). The SAI genotype is an exclusive South American lineage that emerged in the 1960s. The A/SAII genotype may have emerged in Asia in approximately 1995 before being introduced into South America. Both SAI and A/SAII genotype strains clearly differ from the Massachusetts strains that are included in the vaccine formulations being used in most South American countries.


Asunto(s)
Infecciones por Coronavirus/veterinaria , Variación Genética , Virus de la Bronquitis Infecciosa/clasificación , Proteínas de la Nucleocápside/genética , Enfermedades de las Aves de Corral/epidemiología , Enfermedades de las Aves de Corral/virología , Glicoproteína de la Espiga del Coronavirus/genética , Animales , Argentina/epidemiología , Pollos , Análisis por Conglomerados , Infecciones por Coronavirus/epidemiología , Infecciones por Coronavirus/virología , Genotipo , Virus de la Bronquitis Infecciosa/genética , Virus de la Bronquitis Infecciosa/aislamiento & purificación , Epidemiología Molecular , Datos de Secuencia Molecular , Filogenia , Análisis de Secuencia de ADN , Uruguay/epidemiología
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