Key result
An outbreak of avian encephalomyelitis in a flock of 30,600 commercial laying hens in Northeastern Brazil resulted in a 16.5% mortality rate and clinical signs in approximately 60% of the flock.
Why the study?
There have not been previous reports of avian encephalomyelitis in commercial laying hens in Northeastern Brazil.
Observational (n=30,600)
This report describes the first outbreak of avian encephalomyelitis in commercial laying hens in Northeastern Brazil, highlighting the clinical and pathological features of the disease.
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Warrants vigilance for neurological outbreaks in Brazilian layers; leaves open optimal vaccination and surveillance strategies.
Rocha et al. (2019) conducted an observational in Avian encephalomyelitis (n=30,600). Avian encephalomyelitis infection was evaluated on Mortality. An outbreak of avian encephalomyelitis in a flock of 30,600 commercial laying hens in Northeastern Brazil resulted in a 16.5% mortality rate and clinical signs in approximately 60% of the flock.
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