Replication and transmission of the novel bovine influenza D virus in a guinea pig model

Chithra Sreenivasan, Milton Thomas, Zizhang Sheng, Ben M. Hause, Emily A. Collin, David E.B. Knudsen, Angela Pillatzki, Eric Nelson, Dan Wang, Radhey S. Kaushik, Feng Li

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

Influenza D virus (FLUDV) is a novel influenza virus that infects cattle and swine. The goal of this study was to investigate the replication and transmission of bovine FLUDV in guinea pigs. Following direct intranasal inoculation of animals, the virus was detected in nasal washes of infected animals during the first 7 days postinfection. High viral titers were obtained from nasal turbinates and lung tissues of directly inoculated animals. Further, bovine FLUDV was able to transmit from the infected guinea pigs to sentinel animals by means of contact and not by aerosol dissemination under the experimental conditions tested in this study. Despite exhibiting no clinical signs, infected guinea pigs developed seroconversion and the viral antigen was detected in lungs of animals by immunohistochemistry. The observation that bovine FLUDV replicated in the respiratory tract of guinea pigs was similar to observations described previously in studies of gnotobiotic calves and pigs experimentally infected with bovine FLUDV but different from those described previously in experimental infections in ferrets and swine with a swine FLUDV, which supported virus replication only in the upper respiratory tract and not in the lower respiratory tract, including lung. Our study established that guinea pigs could be used as an animal model for studying this newly emerging influenza virus.

Original languageEnglish
Pages (from-to)11990-12001
Number of pages12
JournalJournal of Virology
Volume89
Issue number23
DOIs
StatePublished - 2015

Bibliographical note

Publisher Copyright:
© 2015, American Society for Microbiology.

ASJC Scopus subject areas

  • Microbiology
  • Immunology
  • Insect Science
  • Virology

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