Norovirus outbreak in a school in the north of Portugal

Castro, L; Cardoso, Alicia I.; Rebelo-Andrade, Helena; Gray, Jim; Saraiva, Margarida; Gonçalves, Guilherme

doi:10.2807/esw.08.13.02424-en

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(2 citation statements)

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“…Our initial hypothesis that this was a norovirus outbreak was influenced by the clinical and epidemiological features of the outbreak, which were similar to other outbreaks occurring around that time in the same geographical area and in similar settings [4, 5]. The alternative hypothesis that the outbreak was due to rotavirus was simultaneously raised because this aetiology has been recently described by other Portuguese authors [6, 7].…”

Section: Discussionmentioning

confidence: 64%

“…In terms of relative frequency, adenoviruses have been described as being in the ‘minority’, while noroviruses (caliciviruses) and rotaviruses are the most frequently encountered [2, 3]. In the municipality where this gastroenteritis outbreak occurred, and in a neighbouring municipality, noroviruses (caliciviruses) had already been identified as the cause of outbreaks in children in these type of settings [4, 5]. In other published studies, rotaviruses have been identified as major causes of gastroenteritis in Portuguese children [6], namely in a hospital in the same geographic area [7].…”

Section: Introductionmentioning

confidence: 99%

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Outbreak of acute gastroenteritis caused by adenovirus type 41 in a kindergarten

et al. 2010

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In response to an alert due to epidemic gastroenteritis in children in a kindergarten, an outbreak investigation was carried out in a Portuguese municipality. The objectives were to establish an aetiological diagnosis, assess vaccine efficacy if possible, and to take corrective measures if necessary. The warden at the kindergarten was interviewed, and we visited the premises. The overall attack rate was 11·4% and most cases were mild. Stool samples from three symptomatic children were collected and screened for the presence of noroviruses, rotaviruses and adenoviruses. High vaccination coverage against rotaviruses was recorded in children aged <2 years. We initially thought that noroviruses and rotaviruses were more likely to have been the aetiological cause of the disease, but the outbreak was caused by infection with adenovirus 41. These viruses should not be overlooked in the laboratory protocol in the study of acute gastroenteritis outbreaks.

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Section: Discussionmentioning

confidence: 64%