Broad IBV protection induced by a live IBV-NDV vaccine containing a Mass and Q1 strain
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Five vaccination-challenge trials were performed with a live attenuated vaccine which includes an infectious bronchitis virus (IBV) Massachusetts strain (H120, GI-1), an IBV Q1 strain (BNF 28/86, GI-16), and a Newcastle disease virus (NDV) cloned strain. The e... ...