6 documents found, page 1 of 1
Dengue virus importation risks in Africa: a modelling study
Poongavanan, Jenicca; Lourenço, José; Tsui, Joseph L.H.; Colizza, Vittoria; Ramphal, Yajna; Baxter, Cheryl; Kraemer, Moritz U. G.; Dunaiski, MarcelBackground: Dengue is a significant global public health concern that poses a threat in Africa. Particularly, African countries are at risk of viral introductions through air travel connectivity with areas of South America and Asia in which explosive dengue outbreaks frequently occur. Limited reporting and diagnostic capacity hinder a comprehensive assessment of continent-wide transmission dynamics and deployme...
Unsupervised extraction of epidemic syndromes from participatory influenza surv...
Kalimeri, Kyriaki; Delfino, Matteo; Cattuto, Ciro; Perrotta, Daniela; Colizza, Vittoria; Guerrisi, Caroline; Turbelin, Clement; Duggan, JimAbstract: Seasonal influenza surveillance is usually carried out by sentinel general practitioners (GPs) who compile weekly reports based on the number of influenza-like illness (ILI) clinical cases observed among visited patients. This traditional practice for surveillance generally presents several issues, such as a delay of one week or more in releasing reports, population biases in the health-seeking behavi...
Influenzanet: citizens among 10 countries collaborating to monitor influenza in...
Koppeschaar, Carl E.; Colizza, Vittoria; Guerrisi, Caroline; Turbelin, Clément; Duggan, Jim; Edmunds, W John; Kjelsø, Charlotte; Mexia, RicardoBackground: The wide availability of the Internet and the growth of digital communication technologies have become an important tool for epidemiological studies and health surveillance. Influenzanet is a participatory surveillance system monitoring the incidence of influenza-like illness (ILI) in Europe since 2003. It is based on data provided by volunteers who self-report their symptoms via the Internet throug...
Participatory Syndromic Surveillance of Influenza in Europe
Guerrisi, Caroline; Turbelin, Clément; Blanchon, Thierry; Hanslik, Thomas; Bonmarin, Isabelle; Levy-Bruhl, Daniel; Perrotta, Daniela; Paolotti, DanielaThe growth of digital communication technologies for public health is offering an unconventional means to engage the general public in monitoring community health. Here we present Influenzanet, a participatory system for the syndromic surveillance of influenza-like illness (ILI) in Europe. Through standardized online surveys, the system collects detailed profile information and self-reported symptoms volunteere...
The representativeness of a European multi-center network for influenza-like-il...
Cantarelli, Pietro; Debin, Marion; Turbelin, Clément; Poletto, Chiara; Blanchon, Thierry; Falchi, Alessandra; Hanslik, Thomas; Bonmarin, IsabelleThe Internet is becoming more commonly used as a tool for disease surveillance. Similarly to other surveillance systems and to studies using online data collection, Internet-based surveillance will have biases in participation, affecting the generalizability of the results. Here we quantify the participation biases of Influenzanet, an ongoing European-wide network of Internet-based participatory surveillance sy...
Association between Recruitment Methods and Attrition in Internet-Based Studies
Bajardi, Paolo; Paolotti, Daniela; Vespignani, Alessandro; Eames, Ken; Funk, Sebastian; Edmunds, W. John; Turbelin, Clement; Debin, MarionInternet-based systems for epidemiological studies have advantages over traditional approaches as they can potentially recruit and monitor a wider range of individuals in a relatively inexpensive fashion. We studied the association between communication strategies used for recruitment (offline, online, face-to-face) and follow-up participation in nine Internet-based cohorts: the Influenzanet network of platform...