Abstract

Newcastle disease (ND) is one of most devastating disease of domestic and wild bird. Brazilian active and passive epidemiological surveillance have been implemented to avoid the Newcastle Disease Virus (NDV) infection risk. The present study was performed comparing the respiratory and digestive viral load distribution from apathogenic positive samples obtained from active surveillance and with the frequency through qPCR positive results from these swabs. The results show a higher load of NDV detected in respiratory samples and some swabs were positive only for cloaca demonstrating as both sampling as the molecular screening corroborate to improve the knowledge the NDV infection characteristics in the nature.

Keywords:Newcastle disease virus; Diagnosis; Active surveillance; qPCR