Live influenza virus vaccines and preparation thereof
US3953592A · kind A · utility
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8Claims
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Assignee
Inventor
Key dates
| Filing date | Sep 27, 1973 |
| Grant date | Apr 27, 1976 |
| Priority date | — |
| Expiry date | Sep 27, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2760/16134
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Stable H.sub.3 N.sub.2 influenza virus strains completely resistant to serum inhibitors are obtained by passaging at least one time in the allantoic cavity of embryonated eggs in the presence of serum a recombinant strain previously obtained from an H.sub.3 N.sub.2 influenza strain and the A/PR.sub.8 influenza virus strain and isolating the so-obtained serum inhibitors resistant strains. The obtained strains are useful for vaccine production.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.