Emergence of Multidrug-Resistant Influenza A(H1N1)pdm09 Virus Variants in an Immunocompromised Child Treated With Oseltamivir and Zanamivir

J Infect Dis. 2015 Oct 15;212(8):1209-13. doi: 10.1093/infdis/jiv245. Epub 2015 May 5.

Abstract

Prolonged treatment of an immunocompromised child with oseltamivir and zanamivir for A(H1N1)pdm09 virus infection led to the emergence of viruses carrying H275Y and/or E119G in the neuraminidase (NA). When phenotypically evaluated by NA inhibition, the dual H275Y-E119G substitution caused highly reduced inhibition by 4 NA inhibitors: oseltamivir, zanamivir, peramivir, and laninamivir.

Keywords: drug resistance; neuraminidase; oseltamivir; pyrosequencing; zanamivir.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acids, Carbocyclic
  • Amino Acid Substitution
  • Antiviral Agents / therapeutic use*
  • Cyclopentanes / therapeutic use
  • Drug Resistance, Viral / genetics*
  • Enzyme Inhibitors / therapeutic use*
  • Guanidines / therapeutic use
  • Humans
  • Immunocompromised Host
  • Infant
  • Influenza A Virus, H1N1 Subtype / drug effects
  • Influenza A Virus, H1N1 Subtype / genetics*
  • Influenza, Human / drug therapy
  • Influenza, Human / virology*
  • Male
  • Mutation, Missense
  • Neuraminidase / genetics*
  • Oseltamivir / therapeutic use
  • Pyrans
  • Sialic Acids
  • Viral Proteins / genetics
  • Zanamivir / analogs & derivatives
  • Zanamivir / therapeutic use

Substances

  • Acids, Carbocyclic
  • Antiviral Agents
  • Cyclopentanes
  • Enzyme Inhibitors
  • Guanidines
  • Pyrans
  • Sialic Acids
  • Viral Proteins
  • Oseltamivir
  • laninamivir
  • Neuraminidase
  • Zanamivir
  • peramivir