EVOLUTION OF INFLUENZA-B/VICTORIA/2/87-LIKE VIRUSES - OCCURRENCE OF A GENETICALLY CONSERVED VIRUS UNDER CONDITIONS OF LOW EPIDEMIC ACTIVITY

被引：20

作者：

KINNUNEN, L ^{[1
]}

IKONEN, N ^{[1
]}

POYRY, T ^{[1
]}

PYHALA, R ^{[1
]}

机构：

[1] NATL PUBL HLTH INST,MOLEC BIOL UNIT,SF-00300 HELSINKI,FINLAND

来源：

JOURNAL OF GENERAL VIROLOGY | 1992年 / 73卷

关键词：

D O I：

10.1099/0022-1317-73-3-733

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Nucleotide sequence analysis of the gene region coding for the HA1 domain of the influenza B virus haemagglutinin was performed on seven field strains isolated during the 1989 to 1990 season and two field strains isolated in 1985 and 1988 in Finland. All isolates were antigenically and genetically related to B/Victoria/2/87 virus and distinct from B/Yamagata/16/88 virus. The three strains isolated at the beginning of the 1989 1990 season in Turku were almost identical to an American variant (B/Texas/37/88-B/Ohio/10/88) of the previous season, whereas the four strains isolated later in the 1989 to 1990 season in Helsinki formed a new group of heterogeneous viruses. The phylogenetic tree compiled suggests that the two branches had evolved from a common origin, probably in 1987.

引用

页码：733 / 736

页数：4

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