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Medical Definition of Torovirus
1. A genus of the family coronaviridae characterised by enveloped, peplomer-bearing particles containing an elongated tubular nucleocapsid with helical symmetry. Toroviruses have been found in association with enteric infections in horses (berne virus), cattle (breda virus), and humans. Transmission takes place probably via the faecal-oral route. (12 Dec 1998)