Rare influenza A (H3N2) variants with reduced sensitivity to antiviral drugs

Emerg Infect Dis. 2010 Mar;16(3):493-6. doi: 10.3201/eid1603.091321.

Abstract

In 2007 and 2008 in Myanmar, we detected influenza viruses A (H3N2) that exhibited reduced sensitivity to both zanamivir and amantadine. These rare and naturally occurring viruses harbored a novel Q136K mutation in neuraminidase and S31N mutation in M2.

MeSH terms

  • Amantadine / pharmacology*
  • Antiviral Agents / pharmacology*
  • Drug Resistance, Viral* / genetics
  • Humans
  • Influenza A Virus, H3N2 Subtype / drug effects*
  • Influenza A Virus, H3N2 Subtype / genetics
  • Influenza, Human / virology
  • Microbial Sensitivity Tests
  • Molecular Sequence Data
  • Mutation
  • Myanmar
  • Neuraminidase / genetics
  • Phylogeny
  • Sequence Analysis, DNA
  • Viral Matrix Proteins / genetics*
  • Viral Proteins / genetics
  • Zanamivir / pharmacology*

Substances

  • Antiviral Agents
  • M2 protein, Influenza A virus
  • Viral Matrix Proteins
  • Viral Proteins
  • Amantadine
  • NA protein, influenza A virus
  • Neuraminidase
  • Zanamivir

Associated data

  • GDB/GQ478863
  • GENBANK/FJ229860
  • GENBANK/FJ229893
  • GENBANK/GQ478854