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. 1994 Aug;32(8):1841–1845. doi: 10.1128/jcm.32.8.1841-1845.1994

Astrovirus as a cause of gastroenteritis in Japan.

E T Utagawa 1, S Nishizawa 1, S Sekine 1, Y Hayashi 1, Y Ishihara 1, I Oishi 1, A Iwasaki 1, I Yamashita 1, K Miyamura 1, S Yamazaki 1
PMCID: PMC263888  PMID: 7989529

Abstract

We used an enzyme immunoassay (EIA) to screen for astrovirus in stool specimens from outbreaks and sporadic cases of gastroenteritis collected between 1982 and 1992 in six prefectural public health institutes in Japan. Three outbreaks of gastroenteritis involving schoolchildren and adults were confirmed to be attributable to astrovirus. Astrovirus was detected in 6 to 10% of the specimens from patients with sporadic gastroenteritis from whom no other bacterial or viral agent had been identified. Among the sporadic cases, astrovirus was most frequently detected in infants less than 1 year of age, and the incidence peaked in March and April. Using specimens from recent outbreaks, we found that the EIA was more sensitive than electron microscopy (EM) for the detection of astrovirus, and many EM-negative specimens were positive by EIA. However, some stool specimens previously found to have astrovirus-like particles by EM were negative by EIA, perhaps because of inadequate storage conditions, such as long-term storage and repeated freezings and thawings. Our results indicate that astrovirus is more commonly associated with childhood gastroenteritis than has been previously appreciated and suggest that further studies to examine the epidemiology and disease burden of this virus are needed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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