A herpesvirus was isolated from the liver of a captive-bred American kestrel (Falco sparverius) which had died of inclusion body disease. Initial isolation was achieved in chicken embryo fibroblasts after three blind passages. Cell-adapted virus produced a distinct rounding of CEF cells within 24 to 48 h. Biologic and serologic tests suggested that the kestrel virus is similar to falcon herpesv...

Trachea, lung, and conjunctive samples from 51 commercial layer farms from Bastos region, São Paulo, Brazil, were submitted to nestedPCR and virus isolation in SPF chicken embryos for ILT diagnosis. This region experienced an outbreak characterized by respiratory signs, decrease in egg production and increased mortality. Out of the 51 tested field samples, 23 were positive for ILT by nested-PCR...

165 Use of CVI988 in optimizing revaccination protocols against Marek's disease. 166 Alteration of a single amino acid in the basic domain of Marek's disease virus Meq oncoprotein plays an important role in T-cell transformation. 167 Correlation between Marek's disease virus replication rates and pathotype based on fifteen virus strains. J. Dunn*, USDA-ARS-ADOL. 168 Attenuation of Marek's disea...


 Infectious laryngotracheitis (ILT) is an acute contagious upper respiratory tract infection of ‎chickens and other birds, caused by Gallid herpesvirus1 (GaHV-1), which has economic ‎importance in the poultry industry. There was no scientific data about incidence ‎disease broiler farms Sulaymaniyah province/Iraq. Therefore, this study aimed to ‎investigate ILTV that region. Clinically inf...