Hemagglutinin Stalk Immunity Reduces Influenza Virus Replication and Transmission in Ferrets

J Virol. 2015 Dec 30;90(6):3268-73. doi: 10.1128/JVI.02481-15.

Abstract

We assessed whether influenza virus hemagglutinin stalk-based immunity protects ferrets against aerosol-transmitted H1N1 influenza virus infection. Immunization of ferrets by a universal influenza virus vaccine strategy based on viral vectors expressing chimeric hemagglutinin constructs induced stalk-specific antibody responses. Stalk-immunized ferrets were cohoused with H1N1-infected ferrets under conditions that permitted virus transmission. Hemagglutinin stalk-immunized ferrets had lower viral titers and delayed or no virus replication at all following natural exposure to influenza virus.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Disease Models, Animal
  • Disease Transmission, Infectious / prevention & control*
  • Ferrets
  • Hemagglutinin Glycoproteins, Influenza Virus / immunology*
  • Influenza A Virus, H1N1 Subtype / immunology*
  • Influenza A Virus, H1N1 Subtype / physiology
  • Influenza Vaccines / administration & dosage
  • Influenza Vaccines / immunology*
  • Male
  • Orthomyxoviridae Infections / prevention & control*
  • Orthomyxoviridae Infections / transmission*
  • Orthomyxoviridae Infections / virology
  • Viral Load
  • Virus Replication / immunology

Substances

  • H1N1 virus hemagglutinin
  • Hemagglutinin Glycoproteins, Influenza Virus
  • Influenza Vaccines