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Lumpy Skin Disease Virus Isolation, Experimental Infection, and Evaluation of Disease Development in a Calf

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Journal Sci Rep
Specialty Science
Date 2024 Sep 3
PMID 39227598
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Abstract

Lumpy skin disease (LSD) is one of the most economically significant viral diseases of cattle caused by the Lumpy Skin Disease Virus (LSDV), classified as a member of the genus Capripoxvirus and belongs to the family Poxviridae. Nodular skin samples were collected from clinically sick cattle in the districts of Amuru and Wara Jarso Ethiopia to isolate LSD virus. The virus was isolated using primary lamb testis and kidney cells. The isolated LSDV was infected into a healthy calf while maintaining the necessary biosecurity measures to generate skin lesions and to assess disease progression using postmortem examinations. On the fourth day after virus inoculation, the calf developed typical LSD skin nodules with increased rectal temperature, which lasted until the 12th day, when they began to decrease. Viral shedding was detected in nasal, oral, and conjunctival swabs from 6 to 14 days after infection using real-time PCR. Post-mortem tissue specimens tested positive for LSD virus using real-time PCR and virus isolation. This study showed that LSDV were responsible for the LSD outbreaks, and the appearance of typical skin nodules accompanied by fever (> 39.5 °C) defined the virus's virulent status. The experimental infection with the isolated infectious LSDV could serve as a platform for future vaccine evaluation study using an LSDV challenge model.

Citing Articles

Lumpy Skin Disease: Insights into Molecular Pathogenesis and Control Strategies.

Haider A, Abbas Z, Taqveem A, Ali A, Khurshid M, El Naggar R Vet Sci. 2024; 11(11).

PMID: 39591335 PMC: 11598853. DOI: 10.3390/vetsci11110561.

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