Community burden and transmission of acute gastroenteritis caused by norovirus and rotavirus in the Netherlands (RotaFam): a prospective household-based cohort study
Abstract
BACKGROUND
Norovirus and rotavirus are the dominant pathogens causing acute gastroenteritis in children. To quantify their natural disease burden and transmission, we prospectively monitored households in an endemic setting in the Netherlands, a high-income country that does not have a rotavirus vaccination programme.
METHODS
We did a prospective, household survey-based cohort study in the Netherlands. Randomly selected households from the Dutch Population Register were invited to participate if they had at least three household members, including a child younger than 2 years. A member of each household was asked to record the gastrointestinal symptoms of all household members every day for 10 consecutie weeks using an interactive smartphone application. Real-time detection of acute gastroenteritis onset on the basis of entered symptoms activated requests for the case and one other household member to complete disease questionnaires and provide stool samples. Stool samples were analysed by real-time PCR for norovirus, rotavirus, adenovirus 40/41, and astrovirus. We calculated the per-pathogen proportion of households with at least one secondary acute gastroenteritis episode (epidemiologically but not microbiologically linked), the probability of a secondary episode in household members at risk (secondary attack rate), and the microbiologically confirmed symptomatic and asymptomatic transmission rates.
FINDINGS
During two seasons (January to March) in 2016 and 2017, 30 660…
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