[Problems] The present invention provides a purification method capable of more effectively removing the contaminants with physical characteristics similar to the virus from the composition containing the virus, while preventing the denaturation of the virus, than conventional methods.

[Means to solve problems] A purification method for removing a contaminant from a composition containing a virus particle and the contaminant, the purification method comprising: a preparation step of preparing the composition containing a virus particle and a contaminant; a first adsorption step of adsorbing the virus particle on a first adsorbent composed of a calcium phosphate compound by contacting the composition with the first adsorbent; a first elution step of eluting the virus particle from the first adsorbent to obtain a first eluate; a second adsorption step of adsorbing the virus particle on a second adsorbent composed of a calcium phosphate compound by contacting the first eluate with the second adsorbent; and a second elution step of eluting the virus particle from the second adsorbent to obtain a second eluate; one of the first elution step and the second elution step comprising pH gradient elution, and the other comprising salt concentration gradient elution.

The present invention relates to methods and vaccine compositions for inducing a safe immune response against polio virus in a human subject in need thereof, comprising administering to the subject a composition comprising inactivated Sabin poliovirus (sIPV) strains, wherein the sIPV strains have been produced on PER.C6® cells.

Described are improved processes for production and purification of nucleic acid-containing compositions, such as non-naturally occurring viruses, for example, recombinant polioviruses that can be employed as oncolytic agents. Some of the described improved processes relate to improved processes for producing viral DNA template. Also described are improved processes for chromatography purification of nucleic acid-containing compositions, in which the nucleic acid is quantified in chromatography fractions using a rapid detection method of the one or more nucleic acid sequences of the nucleic acid-containing composition, such as detection by real time RT-qPCR. In addition, improved processes for production and purification of oncolytic poliovirus, such as PVS-RIPO, are described. Compositions generated using these methods are also provided.

Provided herein are compositions of virus like particles (VLPs) of poliovirus (PV) that have one or more stabilizing mutations that confer a higher degree of thermostability to the N-antigenic form of the VLPs. These VLPs are non-infectious, and thus safer for use in vaccine development and administration to clinical subjects.

The present invention pertains to the field of industrial scale inactivation of various enteroviruses and large and industrial scale production of enterovirus vaccine compositions and combinations of various enteroviruses so obtained.

The disclosure concerns vaccines; and more particularly, highly antigenic thermostable vaccines configured for mucosal or transdermal delivery without reconstitution. Also disclosed are methods for formulating the highly antigenic thermostable vaccines.

A combination of cationic nanoparticles and viruses and uses thereof. The use of nanoparticles for enhancing the infectious capacity of a live virus, preferably a non-enveloped live virus.

The present invention pertains to the field of industrial scale inactivation of various enteroviruses and large and industrial scale production of enterovirus vaccine compositions and combinations of various enteroviruses so obtained.

The present disclosure relates to methods of producing Enterovirus C, e.g., for poliomyelitis vaccine production. In some embodiments, the methods include adding polysorbate to the cell culture medium during or prior to inoculation with the virus and/or culturing cells in a fixed bed bioreactor. Further provided herein is an Enterovirus C produced by the methods of production disclosed herein, as well as compositions, immunogenic compositions, and vaccines related thereto.

Provided herein are compositions of virus like particles (VLPs) of poliovirus (PV) that have one or more stabilizing mutations that confer a higher degree of thermostability to the N-antigenic form of the VLPs. These VLPs are non-infectious, and thus safer for use in vaccine development and administration to clinical subjects.