Peaton virus (PEAV) is a type of arthropod-borne virus (arbovirus) belonging to the genus Orthobunyavirus, much like Akabane virus and Aino virus. These arboviruses cause stillbirth and congenital malformations of fetuses in ruminants. In Japan, abnormal birth in bovine caused by PEAV were reported in Okinawa, Kyushu, and Chugoku regions, but it has never been reported in Shikoku region. The abnormal birth occurred in 2020 in Ehime Prefecture (Shikoku region) and suspected of being caused by PEAV from results of clinical signs, pathological findings, and virus neutralization test using PEAV. However, PEAV was not detected and isolated. This report describes the case of abnormal birth in bovine suspected of being caused by PEAV first occurred in Shikoku region, Japan.
A complex carcinoma of the mammary gland was diagnosed in a free-living old female Japanese raccoon dog (Nyctereutes procyonoides viverrinus). Invasion into lymphatic vessels and metastasis in the inguinal lymph node were observed. This is the first report of complex carcinoma of the mammary gland in a raccoon dog.
In a rabbit breeding facility, 10 rabbits died successively within a week. Upon the pathological examination of a rabbit, necrotizing hemorrhagic bronchopneumonia was found. Pasteurella multocida was isolated from the lung lesion. A capsular typing polymerase chain reaction of the isolate yielded both types A-and F-specific amplification products. DNA sequencing of its capsule biosynthetic loci revealed that the isolate preser ved all sequences of types A and F primer design sites. However, the capsular serotype of the isolate could not be determined by an indirect hemagglutination reaction. The isolate was classified into sequence type (ST) 4 using multilocus sequence typing following the Rural Industries Research and Development Corporation (RIRDC) scheme. This is the first repor t on the isolation from a rabbit of a P. multocida grouped into clonal complex 171 consisting of ST4,
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