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Survey of rotavirus‐associated severe complications in Aichi Prefecture
Author(s) -
Hattori Fumihiko,
Kawamura Yoshiki,
Kawada Junichi,
Kojima Seiji,
Natsume Jun,
Ito Koichi,
Saito Shinji,
Kitagawa Yoshiro,
Okumura Akihisa,
Yoshikawa Tetsushi
Publication year - 2018
Publication title -
pediatrics international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.49
H-Index - 63
eISSN - 1442-200X
pISSN - 1328-8067
DOI - 10.1111/ped.13506
Subject(s) - medicine , encephalopathy , incidence (geometry) , encephalitis , pediatrics , myocarditis , complication , urinary system , rotavirus , surgery , diarrhea , virus , immunology , physics , optics
Background Rotavirus can, rarely, cause severe complications such as encephalopathy/encephalitis, myocarditis, sudden death, urinary stone, and gastrointestinal ( GI ) bleeding; and the incidence of these severe complications remains unclear. Additionally, it has not been determined whether rotavirus ( RV ) vaccine could reduce cases of severe complications or not. Methods A two‐part questionnaire was designed to determine the number and clinical features of severe complications between 1 September 2008 and 31 August 2015, including the observation periods before and after RV vaccine introduction in Aichi Prefecture. Results Twenty‐four cases of encephalitis/encephalopathy, eight cases of sudden death, three cases of urinary tract stone, and three cases of GI bleeding were reported during the 2008/2009 season and the 2012/2013 seasons. Although five cases of encephalitis/encephalopathy were reported, no other cases of severe complications were reported during the 2013/2014 and 2014/2015 seasons. No age difference was noted according to type of complication. Although onset of encephalitis/encephalopathy and of sudden death was around day 2 of illness, that of urinary tract stone and GI bleeding was slightly later (day 6 and day 4). In addition to the eight sudden deaths, fatal outcome was also noted in four cases (13.8%) of encephalitis/encephalopathy, and in one case of GI bleeding. Conclusion According to the questionnaire survey in Aichi Prefecture, the incidence of the four severe RV ‐associated complications appears to have declined as the vaccination rate has increased.

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