Certain universal neoepitopes and cancer specific neoepitopes and methods therefor are presented that may be used in immunotherapy and cancer diagnosis. Preferred therapeutic and diagnostic compositions include antibodies or fragments thereof that bind to neoepitopes on cancer cells.

A vaccine for preventing β-CoV infection includes at least one viral vector containing a β-CoV DNA sequence which codes the S protein for the β-CoV. The β-CoV RNA sequence can be a SARS-2 β-CoV DNA sequence. The vaccine may further includes a packaging plasmid based on an adenovirus. The viral vector and packaging plasmid can be contained in a packaging cell and encapsidated in a capsid. A method of vaccinating a mammal subject against infection from at least one group of β-CoV includes separating a broad group of β-CoV into homology groups based on similarities in the β-CoV RNA sequences which code for their S proteins, identifying at least one consensus sequence for each homology group which has a sequence identity of greater than 60% to all other members of the homology group, and preparing a viral vector including at least a portion of the consensus sequence from at least one homology group.

Methods and compositions for diagnosing and vaccinating against Ehrlichia canis and Ehrlichia chaffeensis are provided.

The present disclosure provides chimeric adenoviral vectors comprising a nucleic acid encoding a coronavirus disease 2019 (COVID-19) protein and an adjuvant and methods for using the vectors to elicit an immune response to the SARS-CoV-2 protein in order to treat COVID-19.

Provided are an H5 avian influenza vaccine strain which differentiates infected from vaccinated animals, a preparation method therefor, and an application. The vaccine strain uses an NA protein of influenza B as a label, and has application value and public health significance for the prevention, control and decontamination of H5 avian influenza.

Disclosed herein are antibodies to SARS-CoV-2 antigens and recombinant nucleic acid sequences that encode the SARS-CoV-2 antibodies. The disclosure also provides a method of preventing and/or treating a SARS-CoV-2 infection or disease or disorder associated with SARS-CoV-2 infection (e.g., COVID-19) in a subject using said compositions and methods.

Disclosed herein is a vaccine comprising a Coronavirus disease 2019 (COVID-19) antigen in a combination with an immunoglobulin from post-exposure treatment. The antigen can be a consensus antigen. The consensus antigen can be a consensus spike antigen. Also disclosed herein is a method of treating a subject in need thereof, by administering the vaccine to the subject.

Disclosed are cationic lipids which are compounds of Formula I. Cationic lipids provided herein can be useful for delivery and expression of mRNA and encoded protein, e.g., as a component of liposomal delivery vehicle, and accordingly can be useful for treating various diseases, disorders and conditions, such as those associated with deficiency of one or more proteins. ##STR00001##

RNA encoding an immunogen is co-delivered to non-immune cells as the site of delivery and also to immune cells which infiltrate the site of delivery. The responses of these two cell types to the same delivered RNA lead to two different effects, which interact to produce a strong immune response against the immunogen. The non-immune cells translate the RNA and express the immunogen. Infiltrating immune cells respond to the RNA by expressing type I interferons and pro-inflammatory cytokines which produce a local adjuvant effect which acts on the immunogen-expressing non-immune cells to upregulate major histocompatibility complex expression, thereby increasing presentation of the translated protein to T cells. The effects on the immune and non-immune cells can be achieved by a single delivery of a single RNA e.g., by a single injection.

The present invention is directed to a pharmaceutical composition including (e.g. for use as an adjuvant) a polymeric carrier cargo complex, comprising as a carrier a polymeric carrier formed by disulfide-crosslinked cationic components; and as a cargo at least one nucleic acid molecule, and at least one antigen that is selected from an antigen from a pathogen associated with infectious disease; an antigen associated with allergy or allergic disease; an antigen associated with autoimmune disease; or an antigen associated with a cancer or tumour disease, or in each case a fragment, variant and/or derivative of said antigen. The pharmaceutical composition allows for efficient induction of an adaptive immune response directed against said antigen. The present invention furthermore provides kits, as well as the use of the pharmaceutical composition or the kit as a vaccine, particularly in the treatment of infectious diseases, allergies, autoimmune diseases and tumour or cancer diseases.