FIELD: medicine, pharmaceutics.
SUBSTANCE: invention refers to biotechnology and virology. An influenza virus contains 6 internal genome segments of one or more virus donors and genome segments coding an NA polypeptide, and the NA polypeptide. The NA polypeptide comprises the amino acid sequence SEQ ID NO:6. There are also described immunogenic composition and vaccine containing the above virus, as well as using it for preparing a therapeutic agent. The invention can be used in medicine.
EFFECT: what is described is an influenza reassortant virus.
16 cl, 4 dwg, 3 tbl
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