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Table 2 Estimated number of hospitalized patients and deaths due to norovirus gastroenteritis among adults aged ≥60 years in Japan

From: Nationwide epidemiologic study of norovirus-related hospitalization among Japanese older adults

Stratum (No. of hospital beds) Administrative year 2012   Administrative year 2013   Administrative year 2014  
Hospitalized patients Deaths Hospitalized patients Deaths Hospitalized patients Deaths
University hospital 367 5 284 9 181 4
≥500 2552 147 1853 138 1246 123
400–499 2458 57 1772 54 1347 54
300–399 5608 147 4072 135 3092 172
200–299 4932 42 3554 36 2464 56
100–199 10,507 207 6429 209 4519 151
< 99 5387 41 3639 0 2858 22
Total estimated number 31,800 650 21,600 580 15,700 580
(95% confidence interval) (25,700–37,900) (430–860) (17,700–25,500) (370–790) (12,900–18,500) (380–790)