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A rapid and affordable amplicon-based method for next generation genome sequencing of the infectious bursal disease virus
Techera, Claudia; Tomás, Gonzalo; Grecco, Sofía; Williman, Joaquín; Hernández, Martín; Olivera, Valeria Soledad; Bandac, Alejandro; Vagnozzi, Ariel Eduardo; Panzera, Yanina; Marandino, Ana; Pérez, Ruben (Elsevier, 2023-12)The infectious bursal disease virus (IBDV) causes a severe immunosuppressive disorder in young chickens. IBDV evolution resulted in the emergence of strains with divergent genetic, antigenic, and pathogenic characteristics. ... -
Comparative histopathological and immunological study of two field strains of chicken anemia virus
Rimondi, Agustina; Pinto, Silvina; Olivera, Valeria Soledad; Dibarbora, Marina; Perez Filgueira, Daniel Mariano; Craig, María Isabel; Pereda, Ariel Julian (BioMed Central, 2014-10)Infection of poultry with chicken anemia virus (CAV) is implicated in several field problems in broiler flocks due to the immunosuppression generated and, consequently, the increased susceptibility to secondary infections. ... -
Epidemiological data of an influenza A/H5N1 outbreak in elephant seals in Argentina indicates mammal-to-mammal transmission
Uhart, Marcela M.; Vanstreels, Ralph E. T.; Nelson, Martha I.; Olivera, Valeria Soledad; Campagna, Julieta; Zavattieri, Victoria; Lemey, Philippe; Campagna, Claudio; Falabella, Valeria; Rimondi, Agustina (Nature Publishing Group, 2024-11)H5N1 high pathogenicity avian influenza virus has killed thousands of marine mammals in South America since 2022. Here we report epidemiological data and full genome characterization of clade 2.3.4.4b H5N1 HPAI viruses ... -
Evidence of a fixed internal gene constellation in influenza A viruses isolated from wild birds in Argentina (2006–2016)
Rimondi, Agustina; Gonzalez Reiche, Ana Silvia; Olivera, Valeria Soledad; Decarre, Julieta; Castresana, Gabriel Julián; Romano, Marcelo; Nelson, Martha I.; van Bakel, Harm; Pereda, Ariel Julian; Ferreri, Lucas; Geiger, Ginger; Perez, Daniel Roberto (Springer Nature, 2018)Wild aquatic birds are the major reservoir of influenza A virus. Cloacal swabs and feces samples (n = 6595) were collected from 62 bird species in Argentina from 2006 to 2016 and screened for influenza A virus. Full genome ... -
Evidence of porcine circovirus type 2 and co-infection with ungulate protoparvovirus 1 (porcine parvovirus) in mummies and stillborn piglets in subclinically infected farm
Serena, Maria Soledad; Dibarbora, Marina; Olivera, Valeria Soledad; Metz, German Ernesto; Aspitia, Carolina Gabriela; Pereda, Ariel Julian; Echeverria, Maria Gabriela; Cappuccio, Javier Alejandro (Elsevier, 2021-04)Porcine circovirus type 2 (PCV2) and protoparvovirus 1 (PPV) were detected as single infection (6/131) and (11/131) respectively, or co-infection (6/131) in fetuses and stillborn piglets from normal deliveries in a farm ... -
Genetically diverse herpesviruses in South American Atlantic coast seabirds
Niemeyer, Claudia; Favero, Cíntia Maria; Shivaprasad, H.L.; Uhart, Marcela M.; Meyer Musso, Cesar; Rago, María Virginia; Silva-Filho, Rodolfo Pinho; Lima Canabarro, Paula; Craig, María Isabel; Olivera, Valeria Soledad; Pereda, Ariel Julian; Brandao, Paulo Eduardo; Catao Dias, Luiz (2017)Different herpesviruses have been associated with respiratory and enteric disease and mortality among seabirds and waterfowl. In 2011, a respiratory disease outbreak affected 58.3% (98/168) of the Magellanic penguins ... -
Molecular characterization and cluster analysis of field isolates of avian infectious laryngotracheitis virus from Argentina
Craig, María Isabel; Rojas, María Florencia; Van Der Ploeg, Claudia Andrea; Olivera, Valeria Soledad; Vagnozzi, Ariel Eduardo; Perez, Andrés M.; Konig, Guido Alberto (2017-12-13)Avian infectious laryngotracheitis (ILT) is a worldwide infectious disease that causes important economic losses in the poultry industry. Although it is known that ILT virus (ILTV) is present in Argentina, there is no ... -
Molecular characterization of infectious bursal disease virus (IBDV) isolated in Argentina indicates a regional lineage
Vera, Federico Sebastian; Craig, María Isabel; Olivera, Valeria Soledad; Rojas, María Florencia; Konig, Guido Alberto; Pereda, Ariel Julian; Vagnozzi, Ariel Eduardo (2015-08)In Argentina, classical vaccines are used to control infectious bursal disease virus (IBDV); however, outbreaks of IBDV are frequently observed. This could be due to failures in the vaccination programs or to the emergence ... -
South American H4N2 influenza A virus improved replication in chicken trachea after low number of passages
Ferreri, Lucas Matias; Carnaccini, Silvia; Olivera, Valeria Soledad; Pereda, Ariel Julian; Rajao, Daniela; Perez, Daniel R. (Frontiers Media, 2023-05)Introduction of influenza A viruses (FLUAV) into poultry from waterfowl is frequent, producing economic burden and increasing the probability of human infections. We have previously described the presence of FLUAV in wild ... -
Swine influenza: clinical, serological, pathological, and virological cross‐sectional studies in nine farms in Argentina
Dibarbora, Marina; Cappuccio, Javier Alejandro; Olivera, Valeria Soledad; Quiroga, Maria Alejandra; Machuca, Mariana; Perfumo, Carlos Juan; Pérez, Daniel R.; Pereda, Ariel Julian (International Society for Influenza and other Respiratory Virus Diseases, 2013-12)Background: Influenza A viruses (IAV) are important pathogens responsible for economic losses in the swine industry and represent a threat to public health. In Argentina, clinical, pathological, and virological findings ... -
Two years of surveillance of influenza a virus infection in a swine herd. Results of virological, serological and pathological studies
Cappuccio, Javier Alejandro; Dibarbora, Marina; Lozada, María Inés; Quiroga, María Alejandra; Olivera, Valeria Soledad; Dangelo, Marta; Pérez, Estefanía Marisol; Barrales, Hernán; Perfumo, Carlos Juan; Pereda, Ariel Julian; Pérez, Daniel R. (2017)Swine farms provide a dynamic environment for the evolution of influenza A viruses (IAVs). The present report shows the results of a surveillance effort of IAV infection in one commercial swine farm in Argentina. Two ...