Since Aujeszky`s disease (pseudorabies), which is caused by Suid herpesvirus type 1 (SuHV-1), was first notified in Argentina in 1978, many SuHV-1 strains have been isolated from swine. However, this disease can affect other vertebrates, such as dogs (secondary hosts), and lead to fatal neurological disease. The objective of the current work is to report the first isolation and molecular characterization of SuHV-1 from a dead domestic dog from Santa Fe Province (Argentina), which had had nervous signs compatible with pseudorabies. Samples of brain and trigeminal ganglia from this dog were obtained and fixed in formol for histopathology, and virology studies were conducted after cell disruption. Supernatants of both samples were inoculated onto RK13 cells and, after 72 h, DNA was extracted with phenol-chloroform. Purified DNA was cut with a restriction enzyme and subjected to agarose gel and an aliquot was used to amplify the gD and gC genes by PCR. The gC sequence was compared with other public sequences. The strain isolated from the dog was similar to other Argentinean swine strains.

The genomes of 10 bovine herpesvirus 1 and 5 strains isolated in Argentina from 1989 to 1994, recovered from animals showing different clinical signs, and two reference strains (Los Angeles and A663) were compared by restriction endonuclease analysis. Four restriction enzymes, HindIII, BamHI, EcoRI and PstI, were used and analysis of the restriction patterns used to assign the isolate to either the BHV-1.1, BHV-1.2 or BHV-5 genotype. There was a correlationship between restriction pattern and clinical signs in six out of ten Argentinian isolates.

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Se recolectaron muestras de materia fecal correspondientes a 27 especies de animales en cautiverio pertenecientes al Jardín Zoológico de Mendoza (Argentina), con el fin de encontrar portadores asintomáticos de Salmonella. Las muestras de materia fecal obtenidas con hisopos se sembraron en caldo tetrationato base de Müller-Kauffmann y se incubaron a 43 ºC en baño María durante 24 h. Alícuotas de este medio se sembraron en agar xilosa-lisina-desoxicolato y, finalmente, las colonias desarrolladas se identificaron utilizando pruebas bioquímicas convencionales. Como resultado, se aisló Salmonella serovar Meleagridis a partir de muestras de un oso polar y Salmonella serovar Give a partir de las de un oso pardo y un mono carayá. Ambas serovariedades están asociadas con casos de salmonelosis en humanos.