05-11-2015 дата публикации
Номер: US20150315548A1
Принадлежит:
New influenza donor strains for the production of reassortant influenza A viruses are provided. 1. A reassortant influenza A virus comprising backbone segments from two or more donor strains , wherein the HA segment and the PB1 segment are from different influenza A strains with the same influenza virus HA subtype.2. A reassortant influenza A virus comprising backbone segments PA , PB1 , PB2 , NP , NS and M , wherein the backbone segments are from two or more donor strains , wherein the influenza A virus further comprises a HA and a NA segment and wherein the HA and the PB1 segment are from different influenza A strains with the same influenza virus HA subtype.3. The reassortant influenza A virus of claim 1 , wherein the HA segment and the PB1 segment are from a H1 influenza strain.4. A reassortant influenza A virus comprising backbone segments from two or more donor strains claim 1 , wherein the HA segment and the PB1 segment are from different influenza A strains with different influenza virus HA subtypes claim 1 , wherein the PB1 segment is not from an influenza virus with a H3 HA subtype and/or wherein the HA segment is not from an influenza virus with a H1 or H5 HA subtype.5. The reassortant influenza A virus of claim 4 , wherein the PB1 segment is from a H1 virus and/or wherein the HA segment is from a H3 influenza virus.6. A reassortant influenza A virus comprising backbone segments from two or more donor strains claim 4 , wherein at least one backbone segment is from the A/California/07/09 influenza strain.7. A reassortant influenza A virus comprising backbone segments PA claim 4 , PB1 claim 4 , PB2 claim 4 , NP claim 4 , NS and M claim 4 , wherein the backbone segments are from two or more donor strains and wherein at least one backbone segment is from the A/California/07/09 influenza strain.8. The reassortant influenza virus of claim 7 , wherein the at least one backbone segment is the PB1 segment.9. The reassortant influenza virus of claim 8 , wherein the ...
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