Patent No. 596366 Disclosed is a method for eliciting a non-antigen specific immune response in a member of the avian species, comprising administering, in-ovo or by spray, an effective amount of an immunomodulator composition to the avian species, wherein the immunomodulator composition comprises: a. a cationic liposome delivery vehicle； and b. a bacterially-derived nucleic acid vector that does not code for an immunogen.
