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Vet Pathol 37:667-669 (2000)
© 2000 American College of Veterinary Pathologists
BRIEF COMMUNICATIONS AND CASE REPORTS

Retrospective Study of Porcine Circovirus 2 Infection in Japan: Seven Cases in 1989

M. Mori, K. Sato, S. Akachi, S. Asahi, S. Taniguchi and M. Narita

Abstract

Retrospectively, we demonstrated that seven pigs necropsied in 1989 had characteristic porcine circovirus 2 (PCV-2) lymphoid tissue lesions of severe lymphoid depletion, syncytial giant cell formation, and intracytoplasmic inclusion bodies in macrophages. Immunohistochemically, PCV-2 antigen was detected in these tissues and the distribution of positive staining corresponded to the distribution of inclusion bodies. Electron microscopy demonstrated viral particles compatible with porcine PCV-2. Therefore, the disease occurred in Japan as early as 1989.

Key words: Circovirus infection; immunohistopathology; Japan; pig.

Request reprints from Dr. M. Narita, National Institute of Animal Health, Ministry of Agriculture, Forestry and Fisheries, Kannondai, Tsukuba, Ibaraki 305-0856 (Japan) and Dr. M. Mori, Hokusei Livestock Hygiene Service Center, Mie, Shinshou, Yokkaichi, Mie 510-0064 (Japan).




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