The invention relates to biotechnology, and specifically to a method for creating the adjuvant betulin, suitable for preparing a vaccine against coronavirus SARS-CoV-2. The method consists in sterilizing filtration of a solution of betulin in tetrahydrofuran through a nylon membrane with a pore diameter of 0.22 ?m, decreasing the tetrahydrofuran content by adding a 25-fold volume of sterile 0.01 M tris-buffer (pH 9.0+0.1), and subsequently homogenizing by ultrasound until a homogeneous suspension results, forming spherical amorphous homogeneous particles suitable for binding proteins of the SARS-CoV-2 virus. The proposed technique makes it possible to produce betulin with high sterility and immunogenicity, which improves the quality of the vaccine against the coronavirus.

The invention relates to antigenic polypeptides derived from a naturally occurring R. microplus protein, and nucleic acids encoding such polypeptides. The polypeptides elicit an immune response which, in turn, produces detrimental effects in R. microplus feeding on vaccinated cattle. Thus, the present disclosure provides novel vaccines to protect cattle from R. microplus infestation.

The present invention provides an immunotherapeutic composition for use in combination with one or more MDSC (Myeloid-derived suppressor cells) modulator(s) and a kit of parts comprising such components as well as methods using such components in combination. The invention also provides the use of Phosphodiesterase-5 (PDE5) inhibitors for reversing immunosuppression in chronic infectious diseases. The invention is of very special interest in treating or preventing diseases, especially chronic infectious diseases such as hepatitis B.

Described herein are immunogenic compositions for preventing infection with Middle East respiratory syndrome coronavirus (MERS-CoV) wherein the immunogenic compositions comprise at least a portion of the MERS-CoV S protein and an immunopotentiator.

Compositions and methods are provided that enable activation of innate immune responses through RIG-I like receptor signaling. The compositions and methods incorporate synthetic nucleic acid pathogen associated molecular patterns (PAMPs) that comprise elements initially characterized in, and derived from, the hepatitis C virus genome.

The invention relates to antigenic polypeptides derived from a naturally occurring R. microplus protein, and nucleic acids encoding such polypeptides. The polypeptides elicit an immune response which, in turn, produces detrimental effects in R. microplus feeding on vaccinated cattle. Thus, the present disclosure provides novel vaccines to protect cattle from R. microplus infestation.

The present invention discloses an immunogenic composition comprising S. pneumoniae capsular saccharide conjugates from serotypes 19A and 19F wherein 19A is conjugated to a first bacterial toxoid and 19F is conjugated to a second bacterial toxoid. Vaccines, methods of making vaccines and uses of the vaccines are also described.

A vaccine composition is disclosed. The vaccine composition comprises: (a) a therapeutically effective amount of an influenza virus-like particle (VLP) comprising: (i) influenza M1, influenza M2, influenza hemagglutinin (HA), and influenza neuraminidase (NA) proteins; (b) Foot-and-mouth disease virus (FMDV) capsid protein VP3, recombinant FMDV VP3 (rVP3), VP3 peptide, or SUMO VP3; and (c) alum. Also disclosed is use of a vaccine composition according to the invention in the manufacture of a medicament for inducing an immunogenic response in a subject in need thereof.

Methods are provided for promoting, reducing, or desensitizing various immune responses by delivery of sub-immunogenic doses of an allergen, alone or with other agents, or by delivery of antigens and adjuvants to a cutaneous microenvironment of a subject. Microneedle arrays can be used in connection with this delivery.

The present invention relates to the field of immunogenic compositions and the use of such compositions in medicine. More particularly, it relates to immunogenic compositions comprising an immunogenic polypeptide from non-typeable Haemophilus influenzae, a PE-PilA fusion protein, and optionally an immunogenic polypeptide of UspA2 from Moraxella catarrhalis, for use in subjects having chronic obstructive pulmonary disease (COPD), in particular for reducing the frequency of severe exacerbations (i.e. severe AECOPDs).