Disclosed herein are methods for generating a protective immunogenic response via intranasal administration of an immunogenic composition (e.g., vaccine)/therapeutic immunogenic composition in a mammalian subject. Certain dosing positions of the subject during the administration of immunogenic agents, such that nostrils are tilted upwards, while in a modified sitting, reclining and/or supine posture, is surprisingly correlated with the generation of a strong immunogenic response in both humans and animals.

Disclosed herein are methods for generating a protective immunogenic response via intranasal administration of an immunogenic composition (e.g., vaccine)/therapeutic immunogenic composition in a mammalian subject. Certain dosing positions of the subject during the administration of immunogenic agents, such that nostrils are tilted upwards, while in a modified sitting, reclining and/or supine posture, is surprisingly correlated with the generation of a strong immunogenic response in both humans and animals.

Disclosed is chimeric polypeptides derived from S. aureus proteins having SEQ ID NOs: 1-9 and 139-146. The chimeric polypeptides are useful as immunogens for providing protective immunity against S. aureus infection. Also disclosed are compositions, methods of treatment and prophylaxis, nucleic acids and vectors comprising the nucleic acids.

Disclosed is chimeric polypeptides derived from S. aureus proteins having SEQ ID NOs: 1-9 and 139-146. The chimeric polypeptides are useful as immunogens for providing protective immunity against S. aureus infection. Also disclosed are compositions, methods of treatment and prophylaxis, nucleic acids and vectors comprising the nucleic acids.

Methods of producing bioconjugates of O-antigen polysaccharides covalently linked to a carrier protein using recombinant host cells are provided. The recombinant host cells used in the methods described herein encode a particular oligosaccharyl transferase enzyme depending on the O-antigen polysaccharide bioconjugate to be produced. The oligosaccharyl transferase enzymes can be PglB oligosaccharyl transferase or variants thereof. Also provided are compositions containing the bioconjugates, and methods of using the bioconjugates and compositions described herein to vaccinate a subject against extra-intestinal pathogenic E. coli. (ExPEC).

Methods of producing bioconjugates of O-antigen polysaccharides covalently linked to a carrier protein using recombinant host cells are provided. The recombinant host cells used in the methods described herein encode a particular oligosaccharyl transferase enzyme depending on the O-antigen polysaccharide bioconjugate to be produced. The oligosaccharyl transferase enzymes can be PglB oligosaccharyl transferase or variants thereof. Also provided are compositions containing the bioconjugates, and methods of using the bioconjugates and compositions described herein to vaccinate a subject against extra-intestinal pathogenic E. coli. (ExPEC).

A vaccine delivery method is presented that includes a composition including as one component a slurry matrix that is a liquid at room temperature and a gel at physiological pH, physiological salt concentrations and/or physiological temperatures and as a second component one or more antigens. Also included are methods of inducing an immune response in a subject and vaccinating a subject by administering such compositions.

A vaccine delivery method is presented that includes a composition including as one component a slurry matrix that is a liquid at room temperature and a gel at physiological pH, physiological salt concentrations and/or physiological temperatures and as a second component one or more antigens. Also included are methods of inducing an immune response in a subject and vaccinating a subject by administering such compositions.

The invention provides methods or compositions for enhancing the potency of a targeted cancer immunotherapy in a subject by using a superantigen in combination with a PD-1 inhibitor.

The invention provides methods or compositions for enhancing the potency of a targeted cancer immunotherapy in a subject by using a superantigen in combination with a PD-1 inhibitor.