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Updated: Jan 17, 2026

Microscopic Observation of Lymphocyte Dynamics in Rat Peyer's Patches
Published on: June 25, 2020
First outbreak of lumpy skin disease in Japan, 2024
Mizuki Watanabe1, Mitsutaka Ikezawa1, Tomoya Kitamura1
1Exotic Disease Group, Exotic Diseases Research Station, National Institute of Animal Health (NIAH), National Agriculture and Food Research Organization (NARO), Tokyo, Japan.
Abstract:
In November 2024, the animal health authority of Japan reported the nation's first case of lumpy skin disease (LSD) at a dairy farm in Fukuoka, Kyushu. Although a total of 22 farms were affected-17 dairy, 3 beef, and 2 mixed-the epidemic was effectively contained within two months through strict control measures. PCR testing confirmed the presence of LSD virus in skin nodules from suspected cattle at the index farms, and infectious virus was isolated. Phylogenetic analysis based on the complete genome sequence indicated that the virus detected in Japan was closely related to strains that have recently circulated in East and Southeast Asia.
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