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Comparative Study
. 2001 Sep;20(9):849-53.
doi: 10.1097/00006454-200109000-00005.

Clinical severity of Norwalk virus and Sapporo virus gastroenteritis in children in Hokkaido, Japan

Y Sakai  1 , S Nakata, S Honma, M Tatsumi, K Numata-Kinoshita, S Chiba
Affiliations
Comparative Study

Clinical severity of Norwalk virus and Sapporo virus gastroenteritis in children in Hokkaido, Japan

Y Sakai et al. Pediatr Infect Dis J. 2001 Sep.

Abstract

Objective: To clarify the clinical significance and etiologic impact of Norwalk virus (NV) and Sapporo virus (SV) in viral gastroenteritis in Japanese children.

Study design: Two outbreaks each of NV gastroenteritis and SV gastroenteritis occurring in an infant home in Sapporo, Japan, as well as 95 hospitalized children with acute gastroenteritis were retrospectively evaluated using a 0- to 20-point clinical severity scoring system.

Results: The mean severity scores for NV and SV gastroenteritis outbreaks were 7.9 and 5.2, respectively, as compared with 8.4 for rotavirus A gastroenteritis that occurred in the same infant home. Among 95 hospitalized children with acute gastroenteritis, rotavirus A was detected in 47% followed by NV in 18%. SV was not found.

Conclusion: Our data indicate that NV can cause severe gastroenteritis and is an important etiologic agent in hospitalized cases, whereas SV causes mild gastroenteritis in Japanese children.

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