Immunogenicity and protective efficacy of Salmonella enterica serovar Pullorum pathogenicity island 2 mutant as a live attenuated vaccine candidate.

ABSTRACT:

Background

Salmonella enterica serovar Pullorum (S. Pullorum) causes Pullorum disease (PD), a severe systemic disease of poultry and results in considerable economic losses in developing countries. In order to develop a safe and immunogenic vaccine, the immunogenicity and protective efficacy of S06004ΔSPI2, a Salmonella pathogenicity island 2 (SPI2) deleted mutant of S. Pullorum was evaluated in 2-day old chickens.

Results

Single intramuscular vaccination with S06004ΔSPI2 (2 × 10(7) CFU) of chickens revealed no differences in body weight or clinical symptoms compared to control group. S06004ΔSPI2 bacteria can colonize and persistent in liver and spleen of vaccinated chickens approximately 14 days, and specific humoral and cellular immune responses were significantly induced.

SUBMITTER: Yin J 

PROVIDER: S-EPMC4513372 | biostudies-literature | 2015 Jul

REPOSITORIES: biostudies-literature