Quantitative risk assessment of salmon louse-induced mortality of seaward-migrating post-smolt Atlantic salmon
Publication date: Available online 2 December 2017 Source:Epidemics Author(s): Anja Bråthen Kristoffersen, Lars Qviller, Kari Olli Helgesen, Knut Wiik Vollset, Hildegunn Viljugrein, Peder Andreas Jansen The Norwegian government recently implemented a new management system to regulate salmon farming in Norway, aiming to promote environmentally sustainable growth in the aquaculture industry. The Norwegian coast has been divided into 13 production zones and the volume of salmonid production in the zones will be regulated based on salmon lice effects on wild salmonids. Here we present a model for assessing salmon lous...
Source: Epidemics - December 4, 2017 Category: Epidemiology Source Type: research

Dynamics and Control of Infections on Social Networks of Population Types
Publication date: Available online 26 October 2017 Source:Epidemics Author(s): Brian G. Williams, Christopher Dye Random mixing in host populations has been a convenient simplifying assumption in the study of epidemics, but neglects important differences in contact rates within and between population groups. For HIV/AIDS, the assumption of random mixing is inappropriate for epidemics that are concentrated in groups of people at high risk, including female sex workers (FSW) and their male clients (MCF), injecting drug users (IDU) and men who have sex with men (MSM). To find out who transmits infection to whom and how th...
Source: Epidemics - October 27, 2017 Category: Epidemiology Source Type: research

The RAPIDD Ebola Forecasting Challenge Special Issue: Preface
Publication date: Available online 24 October 2017 Source:Epidemics Author(s): Cécile Viboud, Lone Simonsen, Gerardo Chowell, Alessandro Vespignani (Source: Epidemics)
Source: Epidemics - October 25, 2017 Category: Epidemiology Source Type: research

Comparison of cluster-based and source-attribution methods for estimating transmission risk using large HIV sequence databases
Publication date: Available online 20 October 2017 Source:Epidemics Author(s): Stéphane Le Vu, Oliver Ratmann, Valerie Delpech, Alison E. Brown, O. Noel Gill, Anna Tostevin, Christophe Fraser, Erik M. Volz Phylogenetic clustering of HIV sequences from a random sample of patients can reveal epidemiological transmission patterns, but interpretation is hampered by limited theoretical support and statistical properties of clustering analysis remain poorly understood. Alternatively, source attribution methods allow fitting of HIV transmission models and thereby quantify aspects of disease transmission. A simulation s...
Source: Epidemics - October 21, 2017 Category: Epidemiology Source Type: research

The RAPIDD Ebola forecasting challenge: Model description and synthetic data generation
Publication date: Available online 20 September 2017 Source:Epidemics Author(s): Marco Ajelli, Qian Zhang, Kaiyuan Sun, Stefano Merler, Laura Fumanelli, Gerardo Chowell, Lone Simonsen, Cecile Viboud, Alessandro Vespignani The Ebola forecasting challenge organized by the Research and Policy for Infectious Disease Dynamics (RAPIDD) program of the Fogarty International Center relies on synthetic disease datasets generated by numerical simulations of a highly detailed spatially-structured agent-based model. We discuss here the architecture and technical steps of the challenge, leading to data sets that mimic as much...
Source: Epidemics - September 20, 2017 Category: Epidemiology Source Type: research