Comparison of Two Inactivated Vaccines Against Infectious Bronchitis Virus Evidences the Interference of Vaccine Formulations on Vaccine Performance
Comparison of Two Inactivated Vaccines Against Infectious Bronchitis Virus Evidences the Interference of Vaccine Formulations on Vaccine Performance
Lucas Pedroso Colvero1, Paulo Eduardo Brandão2*, Cesar Alejandro Rodriguez Rosales2, Hanny Swam3 and Laura Yaneth Buitrago Villarreal1
Figure 1
Light microscopic view (400x) of vaccine A and B evidencing differences in droplet sizes and in emulsion homogeneity.
Figure 2
Mean ELISA S/P ratios for anti-IBV antibodies (vertical axis) for SPF chickens vaccinated with vaccine A (triangles), B (squares) and control birds (circles) at weeks 2, 4 and 6 pots-vaccination (horizontal axis). Numbers close to each point are mean S/P values; values at week 0 (prior to vaccination) were 0.005, -0.003 and -0.001 for vaccines A, B and C, respectively, and are not shown on the graph due to their proximity.
December 2017
Vol. 4, Iss. 6, Pages 88-95
