The present invention relates to formulations of dengue virus vaccine comprising at least one live, attenuated dengue virus or live, attenuated chimeric flavivirus, a buffer, a sugar, a cellulose derivative, a glycol or sugar alcohol, optionally an alkali or alkaline salt and an amino acid; and formulations of dengue virus vaccine comprising at least one live, attenuated dengue virus or live, attenuated chimeric flavivirus, a buffer, a sugar of at least 150 mg/ml, a carrier, and optionally an alkali or alkaline salt and an amino acid.

The present invention provides a modified influenza A virus (IAV) comprising, consisting of, or consisting essentially of at least one artificial gene segment comprising a duplicated packaging signal, the result of which is a modified IAV that is replication competent and avirulent, and when co-infected with a wild type virus leads to segment exchange and compromises the spread of both viruses as well as methods of making and using same and methods of using the IAVs in the treatment and prevention of influenza-related diseases.

Described herein are processes for the purification of viruses and compositions thereof.

Stable lyophilized immunogenic compositions include inter alia live attenuated recombinant flaviviruses, more preferably live attenuated recombinant dengue viruses, at least one carbohydrate, at least one amino acid and is particularly amenable to rapid freeze-drying treatments wherein, the composition preserves desired characteristics of a virus, including virus viability, immunogenicity and stability. The immunogenic composition is devoid of preservatives, polymers and surfactants. The methods for manufacturing the stable lyophilized immunogenic compositions are also provided.

The present invention discloses a combination of vaccine strains for treating, preventing, relieving or controlling Canine Distemper, Canine Parvovirus Enteritis and Canine Infectious Hepatitis, comprising: Canine Distemper virus vaccine strain with the microorganism deposition accession number CGMCC No. 19397, Canine Parvovirus vaccine strain with the microorganism deposition accession number CGMCC No. 19398 and Canine Infectious Hepatitis virus vaccine strain with the microorganism deposition accession number CGMCC No. 19396. The three vaccine strains of the combination of vaccine strains are low in toxicity and good in immunogenicity. The present invention further discloses a live vaccine composition using the above-mentioned combination of vaccine strains as immunogen. The vaccine composition is safe and effective.

The present invention includes a vaccine comprising a SARS-CoV-2 spike protein (S) or portion thereof, and methods of use thereof.

The present invention pertains to a vaccine comprising in combination non-replicating immunogen of porcine circo virus type 2 and live attenuated PRRS virus for use in prophylactically treating an animal against an infection with porcine circovirus type 2 (PCV2) and an infection with PRRS virus by administration of the vaccine into the dermis of the animal.

The present invention provides a recombinant attenuated respiratory syncytial virus (RSV) comprising F protein of stabilized pre-fusion RSV, or comprising protein consisting of the amino acid sequence represented by SEQ ID NO: 2 or functional fragment thereof, and provides genome of the recombinant RSV and a recombinant vector comprising the genome. The recombinant attenuated RSV can be provided as a live vaccine strain which maintains infectability and has excellent safety and stability.

Methods of treating or preventing ocular disease caused by herpes simplex virus-1 infection are provided, and comprise administering to a subject an effective amount of a herpes simplex virus-2 (HSV-2) having a deletion of an HSV-2 glycoprotein D-encoding gene in the genome to treat or prevent ocular disease in the subject, wherein the HSV-2 is phenotypically complemented with an HSV-1 glycoprotein D by propagating the HSV-2 in a complementing cell expressing the HSV-1 glycoprotein D.

Disclosed is an Ad35-vectored vaccine for preventing SARS-CoV-2 infection, comprising an Ad35 vector, wherein the Ad35 vector is loaded with a nucleic acid sequence shown in SEQ ID NO: 1. Some embodiments of the present disclosure have better safety and use convenience. Experiments have shown that the vaccine can produce more S proteins in human cells, which is expected to be developed as a vaccine for preventing SARS-CoV-2 infection. Some embodiments of the present disclosure may be used in combination with another vaccine or may also be used as a therapeutic vaccine for Corona Virus Disease 2019. When a patient is vaccinated with the Ad35-vectored vaccine of the present disclosure at the initial stage of infection, the vaccine quickly induces an immune response in the human body, thereby achieving a therapeutic effect.