Described herein are improved purification methods for virus vaccines and compositions. Also described are Zika, Chikungunya, dengue and yellow fever vaccines and methods of producing and administering said vaccines to subjects in need thereof.

Described herein are improved purification methods for virus vaccines and compositions. Also described are Zika, Chikungunya, dengue and yellow fever vaccines and methods of producing and administering said vaccines to subjects in need thereof.

Described herein are processes for purifying infectious virus particles and uses of protamine in such processes.

Described herein are processes for purifying infectious virus particles and uses of protamine in such processes.

The present invention relates to vaccine products for the treatment or prevention of viral infections. Further provided are methods of reducing contaminants associated with the preparation of cell culture vaccines. Residual functional cell culture DNA is degraded by treatment with a DNA alkylating agent, such as -propiolactone (BPL), thereby providing a vaccine comprising immunogenic proteins derived from a virus propagated on cell culture, substantially free of residual functional cell culture DNA.

Described herein are Zika virus vaccines and compositions and methods of producing and administering said vaccines to subjects in need thereof.

Described herein are Zika virus vaccines and compositions and methods of producing and administering said vaccines to subjects in need thereof.

The present disclosure describes the generation and the use of Ad variants (Ad) possessing any combination of mutations in genes that code for the hexon, penton, fiber, and non-structural proteins, where simultaneous modification of hexon and penton are made to avoid the trapping of Ad in the liver and to reduce toxicity after intravascular virus administration. Such liver de-targeted Ad can be useful tool for selective and specific gene delivery to extra-hepatic tissues and cells, including disseminated metastatic cancer cells.

The present disclosure describes the generation and the use of Ad variants (Ad) possessing any combination of mutations in genes that code for the hexon, penton, fiber, and non-structural proteins, where simultaneous modification of hexon and penton are made to avoid the trapping of Ad in the liver and to reduce toxicity after intravascular virus administration. Such liver de-targeted Ad can be useful tool for selective and specific gene delivery to extra-hepatic tissues and cells, including disseminated metastatic cancer cells.

The present invention relates to serine protease variants, having improved properties compared to the parent protease, in particular variants of a serine protease derived from a strain of Meripilus giganteus belonging to the S53 family. The varinats according to the invention have in particular increased stability, e.g., increased thermo-stability, increased specific activity, and/or increased expression levels, compared to the parent protease. The present invention also relates to polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; and methods of using the variants.