Researchers from Italy, France, and Tunisia warn that sheep can be a potential reservoir of epizootic hemorrhagic disease

Published 2024년 3월 5일

Tridge summary

Epizootic hemorrhagic disease (EHE) serotype 8 has been reported in cattle in Europe for the first time, with cases confirmed in Sardinia, Sicily, Spain, France, and Portugal. The disease, which has no licensed vaccines and can lead to trade restrictions, has been studied by researchers from Italy, France, and Tunisia. They found that infected calves showed symptoms such as fever and lesions, and one in five infected sheep also experienced fever, suggesting that sheep could play a role in the disease's transmission. The study also noted differences in neutralization titers between calves and small ruminants, and a significant decrease in red blood cell count in infected calves.

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Original content

In November 2022, the arrival of serotype 8 of epizootic hemorrhagic disease (EHE) was confirmed on the islands of Sardinia and Sicily (Italy), in symptomatic cattle. This marked the first official EHE report in Europe. Later the disease spread to Spain, France and Portugal. The emergence of the EHE virus in Europe has posed new challenges for the livestock industry, as there are currently no licensed vaccines available and existing legislation imposes restrictions on trade in live domestic cattle and small ruminants from infected areas. To better understand the virus, a group of researchers from Italy, France and Tunisia have carried out a study in which they describe, for the first time, the results of an experimental infection with the recently emerged EHE serotype 8 in domestic ruminant species. , including cattle, sheep and goats. “To our knowledge, the only documented experimental infection of sheep and cattle with EHDV-8 dates back to 1986,” they indicate. In that study, ...

Source: Animalshealth