Live respiratory virus vaccines can be administered to birds by eye drop. This method is considered the most effective, but it is also the most labor intensive. Each bird is individually handled and receives a full dose of vaccine.
live attenuated vaccine contains a weakened pathogen, such as a virus or bacteria, that is still viable. The weakened pathogen is similar enough to the natural infection it prevents to trigger a strong immune responselive attenuated vaccine contains a weakened pathogen, such as a virus or bacteria, that is still viable.
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