- Oral immunization of chickens with avirulent Salmonella vaccine strain carrying C. jejuni 72Dz/92 cjaA gene elicits specific humoral immune response associated with protection against challenge with wild-type Campylobacter. Wyszyńska, A., Raczko, A., Lis, M., Jagusztyn-Krynicka, E.K. Vaccine (2004)