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Volume 20, Number 6—June 2014

Dispatch

Gastroenteritis Outbreaks Caused by a DS-1–like G1P[8] Rotavirus Strain, Japan, 2012–2013

Seiji P. YamamotoComments to Author , Atsushi Kaida, Hideyuki Kubo, and Nobuhiro Iritani
Author affiliations: Osaka City Institute of Public Health and Environmental Sciences, Osaka, Japan

Main Article

Table 1

Description of RVA–associated outbreaks in Osaka City, Japan, during 2009–2013*

Outbreak year, month Outbreak no. No. patients No. specimens collected/no. positive for RVA RVA genotype
2009
April
HC09022
24
6 (2)
G9-P[8]-I1
2010
April HC10032† 19 1 (1) G1-P[8]-I1
December
HC10062
Unknown
2 (2)
G2-P[4]-I2
2011
April HC11027 20 3 (2) G1-P[8]-I1
May
HC11030
18
3 (2)
G9-P[8]-I1
2012
March HC12010 18 3 (3) G1-P[8]-I1
April HC12012 26 5 (3) G1-P[8]-I2
April HC12013 41 5 (2) G1-P[8]-I2
April HC12014† 15 5 (1) G9-P[8]-I1
April HC12016† 18 3 (1) G1-P[8]-I2
April HC12018† 23 3 (1) G1-P[8]-I2
April HC12020 32 2 (2) G1-P[8]-I2
May HC12021 29 3 (2) G1-P[8]-I1
May
HC12022
18
2 (2)
G1-P[8]-I2
2013
March HC13027 33 5 (4) G1-P[8]-I1
May HC13037 26 5 (2) G1-P[8]-I2
May HC13040 8 2 (2) G1-P[8]-I2
May HC13041† 26 1 (1) G1-P[8]-I2
May HC13043 21 5 (2) G1-P[8]-I2
May HC13048 11 2 (2) G1-P[8]-I2
May HC13049 15 5 (3) G1-P[8]-I2

*All outbreaks occurred in nursery schools, except outbreak no. HC10062 (Dec 2010), which occurred in a primary school. RVA, rotavirus A.
†Only 1 sample had test results positive for RVA but the outbreak was confirmed on the basis of epidemiologic data from hospital clinics showing that other patients had RVA–positive test results.

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