Patent · US Expired

Live influenza type B virus vaccines and preparation thereof

US3962423A · kind A · utility

4Cited by

0References

12Claims

0Family size

Assignee

Recherche et Industrie, Therapeutiques, RIT · BE

Inventors

Julien Peetermans · Rixensart, BE
Michele Lobmann · Céroux-Mousty, BE
Jean-Marie Prevost · Brussels, BE
Emil Vascoboinic · Brussels, BE

Key dates

Filing date	Apr 18, 1975
Grant date	Jun 8, 1976
Priority date	—
Expiry date	Apr 18, 1995

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC12N2760/16134
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Attenuated stable influenza type B virus strains are obtained by recombining a vaccinal and previously attenuated influenza type B virus strain with an influenza type B virus isolate having the desired serotype and isolating a recombinant having at least one marker property of the attenuated parent strain which is not shared by the other parent strain and the antigenic composition of the other parent strain. The obtained strains are useful for the production of nasal influenza vaccines.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.