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Title: Glycoprotein G deficient infectious laryngotracheitis virus is a candidate attenuated vaccine. Author: Devlin JM, Browning GF, Hartley CA, Gilkerson JR. Journal: Vaccine; 2007 May 04; 25(18):3561-6. PubMed ID: 17316926. Abstract: Infectious laryngotracheitis virus (ILTV), an alphaherpesvirus, causes respiratory disease in chickens and is currently controlled by vaccination with conventionally attenuated virus strains. These vaccines have limitations because of residual pathogenicity and reversion to virulence, suggesting that a novel vaccine strain that lacks virulence gene(s) may enhance disease control. Glycoprotein G (gG) has recently been identified as a virulence factor in ILTV. In this study the immunogenicity and relative pathogenicity of gG deficient ILTV was investigated in SPF chickens. Birds vaccinated with gG deficient ILTV were protected against clinical signs of disease following challenge with virulent ILTV and gG deficient ILTV was also shown to be less pathogenic than currently available commercial vaccine strains. Thus gG deficient ILTV appears to have potential as a vaccine candidate.[Abstract] [Full Text] [Related] [New Search]