Abstract: The present invention is directed to methods for preparing a stable powder formulation of an alum-adsorbed vaccine. The methods comprise atomizing a liquid formulation comprising an immunogen adsorbed onto an aluminum adjuvant to produce an atomized formulation, freezing the atomized formulation to produce frozen particles, and drying the frozen particles to produce dried powder particles. Pharmaceutical compositions comprising a stable powder formulation of an alum-adsorbed vaccine are also disclosed herein. The pharmaceutical compositions are stable at high temperatures and can be reconstituted in a pharmaceutically acceptable carrier to produce a reconstituted liquid vaccine that exhibits little or no particle agglomeration and retains immunogenicity. Methods of using the alum-adsorbed vaccine compositions for preventing and treating a disease in a subject, wherein the disease is associated with the particular immunogen, are further provided.

Abstract: The present invention is directed to methods for preparing a stable powder formulation of an alum-adsorbed vaccine. The methods comprise atomizing a liquid formulation comprising an immunogen adsorbed onto an aluminum adjuvant to produce an atomized formulation, freezing the atomized formulation to produce frozen particles, and drying the frozen particles to produce dried powder particles. Pharmaceutical compositions comprising a stable powder formulation of an alum-adsorbed vaccine are also disclosed herein. The pharmaceutical compositions are stable at high temperatures and can be reconstituted in a pharmaceutically acceptable carrier to produce a reconstituted liquid vaccine that exhibits little or no particle agglomeration and retains immunogenicity. Methods of using the alum-adsorbed vaccine compositions for preventing and treating a disease in a subject, wherein the disease is associated with the particular immunogen, are further provided.