Differentiating vaccinated chickens from infected chickens
Salmonella Gallinarum and Salmonella Enteritidis belong to Salmonella serogroup D. Both serotypes contain O-antigens 1, 9 and 12. Salmonella Enteritidis contains flagellar antigens. Flagellar antigens are absent in Salmonella Gallinarum.
The two serotypes induce antibodies that are detected by different ELISA tests.
| LPS BD ELISA | g.m. das ELISA | |
|---|---|---|
| Unvaccinated Non-infected birds | - | - |
| SG 9R-vaccinated | + | - |
| S. Enteritidis infected | + | + |
Serological monitoring
of flocks for naturally occurring Salmonella can still
be carried out on those vaccinated with Nobilis SG 9R.