Se determinó los niveles de expresión de las principales citoquinas de la respuesta inmune humoral y celular, realizando un análisis in vitro, que consistió en la inoculación de la ácido retinoico y antígenos de Clostridium perfringens, sobre leucocitos de alpaca; y un análisis in vivo, a través de la administración de la combinación a crías de alpacas. En el análisis in vitro, se realizaron evaluaciones a diferentes concentraciones de antígenos clostridiales y ácido retinoico. Para el estudio in vivo se administró el inóculo a una concentración de 0.25mg/Kg de antígeno clostridial (AgCP) y 0.067mM/Kg de ácido retinoico (ATRA) a doble dosis, a alpacas agrupadas en grupo 1, individuos de 1 día; y grupo 2, individuos de 7-14 días, considerando además animales que no recibieron el tratamiento. Los leucocitos inoculados y muestras de intestino de los individuos tratado...

In Peru there is clinical evidence of the Influenza A virus (VIA) and the presence of antibodies against the VIA in pigs, but there are no official reports of frequency in pig farms in the country. The aim of the study was to determine the frequency of antibodies against VIA in technical farms in Lima, Ica and Arequipa with a history of respiratory problems. Blood samples were obtained from eight age groups of pigs during 2020-2021. Antibodies against VIA were detected using a blocking ELISA test (IDEXX, USA). A total of 283 serum samples from Lima, 287 from Ica and 288 from Arequipa were processed. The overall frequency of antibodies against VIA was 24.9% (95% CI 22.0 – 27.8); while in Lima, Ica and Arequipa it was 33.2% (95% CI 27.8 - 39.0), 19.5% (95% CI 15.1 - 24.6) and 22.2% (95% CI 17.6 - 27.5), respectively. The logistic regression analysis showed that in the Lima region, the ag...

Twenty-one different avian species identified as possible reservoir of avian influenza virus in Lima Metropolitan Region, Peru, Pacific flyway, South America.

Status of samples tested positives by hemagglutination test followed by confirmation using rapid antigen and PCR tests for influenza A virus.