Evolution of influenza B/Victoria/2/87-like viruses: occurrence of a genetically conserved virus under conditions of low epidemic activity

Kinnunen, Leena; Ikonen, Niina; Pöyry, Tuija; Pyhälä, Riikka

doi:10.1099/0022-1317-73-3-733

Cited by 21 publications

(17 citation statements)

References 15 publications

(17 reference statements)

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“…The results presented here confirm the wide distribution of genetic variants of influenza B that were initially identified in the United States [5] and Australia [15], and subsequently in Finland [16], Czechoslovakia and China (unpublished results).…”

supporting

confidence: 87%

Antigenic and genetic analyses of influenza type B viruses isolated in Russia, 1987–91

et al. 1993

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SUMMARYFour influenza type B viruses isolated in Russia during periods of relatively low or high (1990-1) influenza B activity were characterized antigenically using a microneutralization assay. These isolates were antigenically similar to contemporary reference strains from either of two separate lineages represented by B/Victoria/2/87 and B/Yamagata/16/88. The evolutionary relationships of the variable portion of the haemagglutinin (HA1) genes of these viruses were determined by comparison with influenza B HAI sequences previously obtained.The Isolate B/USSR/2/87, collected during the 1987-8 influenza season, was found to be closely related to viruses on the B/Victoria/2/87 lineage that circulated during the 1988-9 influenza season in the United States. Sequence analysis of the isolates from the 1990-1 influenza season demonstrated cocirculation of viruses from both the B/Victoria/2/87 and B/Yamagata/16/88 lineages in Russia, confirming the antigenic analysis.

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confidence: 87%

Antigenic and genetic analyses of influenza type B viruses isolated in Russia, 1987–91

et al. 1993

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“…At present we do not know whether the viruses belonging to evolutionary lineage B on which most of the Japanese isolates during 1985-8 belonged will become a dead-end in the future. It was reported recently that in Finland influenza B strains on lineage B were isolated [15]. However, in worldwide, 96% of influenza B isolates in 1990-1 influenza season belonged to lineage A (YG1 6/88-like) and 4 % belonged to lineage B (B/Victoria/2/87-like) [16].…”

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confidence: 99%

Comparison of the HA genes of type B influenza viruses in herald waves and later epidemic seasons

et al. 1992

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SUMMARYFrom January 1985 to May 1991, herald strains of influenza B virus were isolated in 1987 and 1989 in Japan. In both cases, influenza epidemics caused by the same type followed in the next winter season. The HA gene sequences of the influenza B viruses isolated in Japan from 1987–91, which covers two herald waves of influenza B viruses, were analysed and located on the phylogenetic tree for influenza B viruses after the B/Singapore/64 strain. Co-circulation of at least two evolutionary lineages of the HA genes existed for influenza B viruses in Japan during the period of this study. The herald viruses in one wave (1987) were genetically close to the winter isolates and were considered to be the parental viruses for the following influenza season, while in the other wave (1989) winter isolates belonged to another lineage on which one of the herald viruses was located, but they were genetically and antigenically different from the herald viruses.

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“…Pbenograms were based on the nucleotide differences between viruses. Sequences from previous reports are of: B/Lee/40 (LE40) (Krystal et al, 1982); B/Hong Kong/73 (HK73) and B/Maryland/59 (MD59) (Krystal et al, 1983); B/Singapore/222/79 (SN79) (Verhoeyen et aL, 1983); B/England/222/82 (EN82) (Rota et al, 1987); B/Ann Arbor/I/86 (AA86) and B/USSR/100/83 (SU83) (Bootman & Robertson, 1988) Table 1) (Rota et al, 1990); B/Finland/149/90 (FI49), B/Finland/145/90 (FI45) (Kinnunen et al, 1992).…”

confidence: 99%

“…Within the B/VI/87-1ike viruses, there are only two sub-branches that can be identified genetically, one related to the B/TX/88-1ike viruses and the other represented by B/VI/89-1ike viruses; however viruses from these subbranches are antigenically indistinguishable with polyclonal antiserum. Viruses that were genetically related to both B/TX/88 and B/VI/89 have been isolated in Finland during 1989(Kinnunen et al, 1992 (Devereaux et al, 1984) and version 3.4 of the Phylogeny Inference Package (Phylip;Felsenstein, 1989). Pbenograms were based on the nucleotide differences between viruses.…”

confidence: 99%

Antigenic and Genetic Characterization of the Haemagglutinins of Recent Cocirculating Strains of Influenza B Virus

Rota

Hemphill

Whistler

et al. 1992

Journal of General Virology

106

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Evolution of influenza B/Victoria/2/87-like viruses: occurrence of a genetically conserved virus under conditions of low epidemic activity

Cited by 21 publications

References 15 publications

Antigenic and genetic analyses of influenza type B viruses isolated in Russia, 1987–91

Antigenic and genetic analyses of influenza type B viruses isolated in Russia, 1987–91

Comparison of the HA genes of type B influenza viruses in herald waves and later epidemic seasons

Antigenic and Genetic Characterization of the Haemagglutinins of Recent Cocirculating Strains of Influenza B Virus

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