The invention provides, inter alia, immunogenic compositions that comprise (a) a first antigen, (b) at least first and second adjuvants, wherein the first adjuvant comprises microparticles and wherein the second adjuvant comprises an imidazoquinoline compound, and (c) a pharmaceutically acceptable excipient, which compositions elicits an immune response when administered to a vertebrate subject. The invention also provides methods of producing immunogenic compositions and methods for using immunogenic compositions (e.g., for treatment), among other benefits.
