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Burden of severe rotavirus disease leading to hospitalization assessed in a prospective cohort study in Sweden.

Journal article
Authors Malin Rinder
Anh Nhi Tran
Rutger Bennet
Maria Brytting
Tobias Cassel
Margareta Eriksson
Deborah Frithiof
Leif Gothefors
Jann Storsaeter
Birger Trollfors
Sindri Valdimarsson
Martin Wennerström
Kari Johansen
Published in Scandinavian journal of infectious diseases
ISSN 1651-1980
Publication year 2014
Published at
Language en
Subject categories Infectious Medicine, Pediatrics


Background: The aim of this prospective cohort study was to estimate the burden of severe disease caused by rotavirus-induced gastroenteritis in Swedish children aged < 5 y. Methods: Rotavirus-positive children admitted to hospitals serving 3 geographical regions with 155,838 children aged < 5 y, were offered inclusion in this 1-year study. Rotavirus strains identified were genotyped using multiplex PCR. Disease progression was documented through interviews and chart reviews. Results: In total, 604 children with rotavirus-induced gastroenteritis were included in the study. Forty-nine of 604 (8.1%) fulfilled the criteria for nosocomial infection. The minimum incidence was 388 per 100,000, with significant variability between study regions, ranging from 280 to 542 per 100,000. In all regions, the peak season occurred in February-April, but the season start varied, with first cases observed in October in the eastern region and December in the northern region. Genotypes identified differed between the regions: G1[P8] was most prevalent in all regions (77%), while the most varied pattern was observed in the western region, with G1[P8] observed in 61%, G4[P8] in 13%, G9[P8] in 10%, G2[P4] in 8%, and G3[P8] in 8% of the children. The median age of hospitalized children was 14 months and the median total duration of diarrhoea was 6.9 days. Sixty-eight percent reported a temperature > 38.5°C upon admission. Complications occurred in > 10% of the children, with hypertonic dehydration (32/604) and seizures (10/604) occurring most frequently. Conclusions: Rotaviruses may cause severe febrile acute gastroenteritis leading to dehydration requiring acute rehydration in hospital. In addition, further complications occurred in > 10% of hospitalized children.

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