Phylogenetic Analysis of Rabies Viruses Isolated from Animals in Tokyo in the 1950s

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Abstract
Molecular epidemiological analysis of 96 rabies viruses isolated from animals in Tokyo in the 1950s involves Japanese fixed virus, Komatsugawa, Takamen, and Nishigahara strains. Strains isolated in Tokyo were divided into Tokyo 1 and Tokyo 2, and grouped into a worldwide distribution cluster differing from Takamen and Nishigahara. Tokyo 1 was grouped into the same cluster as viruses isolated from United States west coast dogs in the 1930s and 1940s. Tokyo 2 was grouped into the same cluster as the Komatsugawa strain, also known as a cluster of viruses from the Khabarovsk raccoon dog, and the Lake Baikal stepped fox in Russia. These findings suggest that 1950s Tokyo rabies viruses were related to those in Russia and the USA.