Laying flocks may be vaccinated in the face of an outbreak. Oil emulsion vaccine may effect the egg production more than aluminum hydroxide vaccines. An alternative site is under the skin of the lower neck. Haemophilus vaccines have been given simultaneously with killed Newcastle Disease and Infectious Bronchitis vaccines. Limited information is available of combining Haemophilus with other inactivated bacterial vaccines, especially Cholera and Salmonella vaccines.
Caution is advised before embarking on large-scale use of such combinations.
Experience with the control of coryza in multiple age in-line layer complexes is limited. The following approach can be considered Depopulate laying houses completely at the end of the laying cycle. This must include every escaped chicken. Remove manure and dry-clean house, control rodents, flies, beetles. Preferably clean and disinfect the house.