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Extends porcine kobuvirus range to Thailand; leaves open its role in diarrhea and need for surveillance.
To the Editor: Picornaviruses (family Picornaviridae) are small, nonenveloped viruses with singlestranded, positive-sense genomic RNA. Picornaviruses are currently divided into 8 genera: Enterovirus, Aphthovirus, Cardiovirus, Hepatovirus, Parechovirus, Erbovirus, Teschovirus, and Kobuvirus (1). To date, the genus Kobuvirus consists of 2 offi cially recognized species, Aichi virus and Bovine kobuvirus, and 1 porcine kobuvirus as a candidate species (2-4). Aichi virus (strain A846/88) was fi rst isolated in 1991 from feces of a person with acute gastroenteritis (2). Bovine kobuvirus (strain U-1) was detected in 2003 in bovine serum and fecal samples from clinically healthy cattle (3); in 2008, it was isolated from cattle with diarrhea (5). Aichi virus and bovine kobuvirus were fi rst isolated in Japan. Porcine kobuvirus (strain S-1-HUN) was recently identifi ed from domestic pigs in Hungary (4). Aichi viruses have been also detected in other countries in Asia (6), Europe (7,8), South America (7), and northern Africa (9). Bovine kobuvirus, however, has not been detected outside Asia (Japan and Thailand)
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Reuter et al. (2009) studied this question.
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