We developed a recombinant Newcastle disease virus (NDV) LaSota (rLS) expressing the
infectious bronchitis virus (IBV) S2 gene (rLS/IBV. S2). The recombinant virus showed …

We previously demonstrated that chickens primed with a recombinant Newcastle disease
virus LaSota (rLS) expressing the S2 gene of infectious bronchitis virus (IBV) and boosted …

Recombinant Newcastle disease virus (NDV) LaSota (LS) expressing secreted trimeric
spike (S)-ectodomain (Se) of infectious bronchitis virus (IBV)(rLS/IBV. Se) was developed …

The recombinant LaSota strain expressing a chimeric IBV S1 gene (rLaSota-S1) was
constructed with the S1 gene of the LX4 type IBV ck/CH/LDL/091022. The expression of the …

We have shown previously that replacement of the spike (S) gene of the apathogenic IBV
strain Beau-R with that from the pathogenic strain of the same serotype, M41, resulted in an …

Infectious bronchitis virus (IBV) causes a major disease problem for the poultry industry
worldwide. The currently used live-attenuated vaccines have the tendency to mutate and/or …

Egyptian poultry suffer from frequent respiratory disease outbreaks associated with
Infectious Bronchitis Virus (IBV) variant 2 strains (Egy/VarII). Different vaccination programs …

Infectious bronchitis coronavirus (IBV) shows extensive genotypic and phenotypic variability.
The evolutionary process involves generation of genetic diversity by mutations and …

Infectious Bronchitis virus (IBV) continues to cause significant economic losses for the
chicken industry despite the use of many live IBV vaccines around the world. Several …

Infectious bronchitis virus (IBV) cross-protection trials were performed in healthy chickens
maintained under controlled environmental conditions. Chickens primed or primed and …