Does an attenuated live-virus vaccine and antibacterial medication control swollen-head syndrome in broiler chickens?
Swollen-head syndrome in broiler chickens is caused by a mixed coronavirus and E. coli infection and can be controlled with vaccination and antibacterial medication.
Swollen-head syndrome is a disease seen in broiler chickens between 4 and 6 weeks of age in Southern Africa. It appears to be caused by a mixed coronavirus and Escherichia coli infection. The coronavirus appears to be of a hitherto unrecorded serotype. The disease is controlled by an attenuated live-virus vaccine and antibacterial medication.
Morley et al. (1984) studied this question.