CHEN GW, Shih SR, Hsiao MR, Chang SC, et al.. Multiple genotypes of influenza B viruses co-circulated in Taiwan in 2004-2005. J Clin Microbiol. 2007
An influenza B outbreak occurred in Taiwan in 2004 to 2005, during which both Victoria and Yamagata lineages co-circulated. This study examined 36 influenza B viral genomes isolated during the outbreak to reveal their reassortment patterns. According to the isolate groupings in phylogenetic analysis, we were able to categorize those 36 isolates as either of Victoria and Yamagata lineage for all 8 influenza B genomic segments, except for the NS gene, in which clade A and B existed. Based on these groupings, three genome patterns clearly emerged, namely, pattern I (Vic+Vic+Ya+Vic+Ya+Ya+Ya+A from segments 1-8), pattern II (Ya+Ya+Ya+Ya+Ya+Ya+Ya+B), and pattern III (Ya+Ya+Ya+Ya+Ya+Ya+Ya+A). According to the timeline of those isolates under investigation, it appears that patterns I and II viruses could have generated pattern III via reassortment of the NS gene. On the other hand, a genome-wide comparison of all six pattern III Taiwanese viruses with 37 international influenza B viral genomes showed that two international strains - B/Oslo/71/04 and B/England/23/04, were consistently clustered with those pattern III viruses isolated in Taiwan in 2004-2005, suggesting that Taiwanese pattern III viruses might also have been possibly imported due to their matching genomic composition.
See Also:
Latest articles in those days:
- Structures of H5N1 influenza polymerase with ANP32B reveal mechanisms of genome replication and host adaptation 2 days ago
- Risk assessment of a highly pathogenic H5N1 influenza virus from mink 2 days ago
- Detection of clade 2.3.4.4b highly pathogenic H5N1 influenza virus in New York City 2 days ago
- Sequence-based epitope mapping of high pathogenicity avian influenza H5 clade 2.3.4.4b in Latin America 3 days ago
- Guanylate-binding protein 1 inhibits inflammatory factors produced by H5N1 virus through Its GTPase activity 3 days ago
[Go Top] [Close Window]