Phocine distemper virus in seals, East Coast, United States, 2006

J.A. Philip Earle, Mary M. Melia, Nadine V. Doherty, Ole Nielsen, S. Louise Cosby

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

In 2006 and 2007, elevated numbers of deaths among seals, constituting an unusual mortality event, occurred off the coasts of Maine and Massachusetts, United States. We isolated a virus from seal tissue and confirmed it as phocine distemper virus (PDV). We compared the viral hemagglutinin, phosphoprotein, and fusion (F) and matrix (M) protein gene sequences with those of viruses from the 1988 and 2002 PDV epizootics. The virus showed highest similarity with a PDV 1988 Netherlands virus, which raises the possibility that the 2006 isolate from the United States might have emerged independently from 2002 PDVs and that multiple lineages of PDV might be circulating among enzootically infected North American seals. Evidence from comparison of sequences derived from different tissues suggested that mutations in the F and M genes occur in brain tissue that are not present in lung, liver, or blood, which suggests virus persistence in the central nervous system.
Original languageEnglish
Pages (from-to)215-220
Number of pages6
JournalEmerging Infectious Diseases
Volume17
Issue number2
DOIs
Publication statusPublished - Feb 2011

ASJC Scopus subject areas

  • Microbiology (medical)
  • Infectious Diseases
  • Epidemiology

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