[Enzootic viral abortion on a stud farm in east Switzerland].

The article discusses an outbreak of abortion due to equine herpesvirus-1 (EHV-1), which affected pregnant mares in a stud farm in East Switzerland in 1989, detailing the clinical signals, pathology, and proposed preventive measures.

Overview of the Outbreak

• The research article focuses on an outbreak of equine abortion caused by the equine herpesvirus-1 (EHV-1) that happened in January 1989 at a stud farm in East Switzerland.
• Out of eleven pregnant mares, seven aborted within a span of twenty-three days.
• Four weeks following these events, a newborn foal died a few minutes post-parturition.
• However, three mares gave birth to live foals without complications in the months of February, March, and April.

Examination and Findings

• Post-mortem examination of the eight dead foals confirmed an EHV-1 infection.
• The study explores the clinical signs and pathology associated with this outbreak.
• The researchers observed severe complications during the immediate post-parturition period which starkly contrasts with the ordinary outcome underlined by other scientific authors previously.

Prevention and Control Procedures

• The research paper concludes by outlining certain procedures for the prevention and control of such EHV-1 outbreaks.
• While the specific procedures are not detailed in the abstract, it can be assumed that the full article provides a more in-depth exploration of potential preventive measures.