Hemagglutinin Stalk Immunity Reduces Influenza Virus Replication and Transmission in Ferrets

Author:

Nachbagauer Raffael12,Miller Matthew S.3,Hai Rong1,Ryder Alex B.4,Rose John K.4,Palese Peter15,García-Sastre Adolfo156,Krammer Florian1,Albrecht Randy A.16

Affiliation:

1. Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA

2. Faculty of Life Sciences, University of Vienna, Vienna, Austria

3. Department of Biochemistry and Biomedical Sciences, Institute for Infectious Diseases Research, McMaster Immunology Research Centre, McMaster University, Hamilton, Ontario, Canada

4. Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA

5. Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA

6. Global Health & Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA

Abstract

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.

Funder

CEIRS

HHS | National Institutes of Health

PATH

Publisher

American Society for Microbiology

Subject

Virology,Insect Science,Immunology,Microbiology

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