The transmissibility of noroviruses: Statistical modeling of outbreak events with known route of transmission in Japan

Ryota Matsuyama, Fuminari Miura and Hiroshi Nishiura

PLOS ONE, 2017, vol. 12, issue 3, 1-16

Abstract: In Japan, the fraction of norovirus outbreaks attributable to human-to-human transmission has increased with time, and the timing of the increased fraction has coincided with the increase in the observed fraction of genogroup II genotype 4 (GII.4). The present study aimed to estimate the time-dependent changes in the transmissibility of noroviruses. The effective reproduction number (Ry), for year y, was estimated by analyzing the time series surveillance data for outbreak events from 2000 to 2016. Ry was estimated by using the fraction of outbreak events that were attributable to human-to-human transmission and by employing three different statistical models that are considered to mechanistically capture the possible data-generating process in different ways. The Ry estimates ranged from 0.14 to 4.15 in value, revealing an overall increasing trend (p

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0173996

DOI: 10.1371/journal.pone.0173996

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