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Efficacy of Two Vaccination Strategies against Infectious Bronchitis in Laying Hens
- Ahmed Ali,
- Mohamed S. H. Hassan,
- Shahnas M. Najimudeen,
- Muhammad Farooq,
- Salama Shany,
- Mounir Mohamed El-Safty,
- Adel A. Shalaby and
- Mohamed Faizal Abdul-Careem
Vaccination remains the leading control method against infectious bronchitis (IB) in poultry despite the frequently observed IB outbreaks in vaccinated flocks. Here, two vaccination regimes were evaluated against challenge with the Massachusetts (Mas...