Immune compositions comprising (i) a respiratory syncytial virus (RSV) G polypeptide, which may be a modified G polypeptide relative to the wild-type counterpart, or a nucleic acid encoding such, and (ii) a solvent and one or more immune regulators, wherein the immune regulator(s) is dissolvable in the solvent. Also provided herein are methods for eliciting anti-RSV immune responses using the immune compositions disclosed herein and methods for producing the immune compositions.