Dolphin Morbillivirus in Eurasian Otters, Italy

Area of Science:

• Veterinary Virology
• Wildlife Disease Ecology
• Marine Mammal Health

Background:

• Dolphin morbillivirus (DMV) is a significant pathogen affecting marine mammals.
• Previous outbreaks have been documented in cetaceans across various regions.

Discussion:

• This study presents the first documented evidence of DMV infection in Eurasian otters (Lutra lutra).
• Biomolecular and immunohistochemical analyses confirmed morbillivirus presence in four wild otters from southern Italy.
• Two infected otters exhibited positive immunohistochemical staining for morbilliviral antigen.

Key Insights:

• The Eurasian otter is identified as a novel host for dolphin morbillivirus.
• The expanding host range of DMV raises concerns for wildlife health in the Mediterranean.

Outlook:

• Further research is needed to understand DMV transmission dynamics in semi-aquatic mammals.
• Monitoring programs should include Eurasian otters to track DMV prevalence and impact.