Newcastle Disease (ND), caused by Avian orthoavulavirus 1, and Infectious Bronchitis (IB), caused by Avian infectious bronchitis virus (IBV), are highly contagious poultry diseases with major economic impact. ND affects the respiratory, digestive, and nervous systems, while IB primarily targets the respiratory tract and may impair renal and reproductive function.
Control relies on vaccination and biosecurity. A live bivalent vaccine with attenuated NDV and IBV strains induces rapid mucosal and systemic immunity, promoting early protection, flock uniformity, and reduced handling stress.