Immunization with Modified Vaccinia Virus Ankara-Based Recombinant Vaccine against Severe Acute Respiratory Syndrome Is Associated with Enhanced Hepatitis in Ferrets

Author:

Weingartl Hana12,Czub Markus32,Czub Stefanie12,Neufeld James1,Marszal Peter1,Gren Jason1,Smith Greg1,Jones Shane3,Proulx Roxanne3,Deschambault Yvonne3,Grudeski Elsie3,Andonov Anton32,He Runtao32,Li Yan32,Copps John1,Grolla Allen3,Dick Daryl3,Berry Jody12,Ganske Shelley1,Manning Lisa1,Cao Jingxin32

Affiliation:

1. National Centre for Foreign Animal Diseases

2. Department of Medical Microbiology, University of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2

3. National Microbiology Laboratory, Canadian Science Centre for Human and Animal Health, Winnipeg, Manitoba, Canada R3E 3R2

Abstract

ABSTRACT Severe acute respiratory syndrome (SARS) caused by a newly identified coronavirus (SARS-CoV) is a serious emerging human infectious disease. In this report, we immunized ferrets ( Mustela putorius furo ) with recombinant modified vaccinia virus Ankara (rMVA) expressing the SARS-CoV spike (S) protein. Immunized ferrets developed a more rapid and vigorous neutralizing antibody response than control animals after challenge with SARS-CoV; however, they also exhibited strong inflammatory responses in liver tissue. Inflammation in control animals exposed to SARS-CoV was relatively mild. Thus, our data suggest that vaccination with rMVA expressing SARS-CoV S protein is associated with enhanced hepatitis.

Publisher

American Society for Microbiology

Subject

Virology,Insect Science,Immunology,Microbiology

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