Grippenet.fr participates to the 2nd International Workshop on Participatory Surveillance, organized by the Dutch Influenzanet team and Skoll Global Threats Funds. Epidemiologists, medical doctors, computer scientists, modelers, designers got together to discuss current projects of participatory surveillance around the world, the advantages and limitations, and the possible future of such approach for surveillance and early alert.The event was particularly important because a letter of intent was signed for the cooperation among Influenzanet in Europe (which grippenet.fr is part of), HealthMap / FluNearYou in the US (Children's Hospital Boston and Skoll Global Threats), and FluTracking in Australia (Newcastle University, Hunter New England Population Health and the Hunter Medical Research Institute).
Adults are important vehicles of long-range spread of epidemics for they high distance travels. On the other hand, children are crucial actors of the local trasmission for their intense social activity at schools. We address the interplay between these two mechanisms and its impact on the geographical spread of the 2009 H1N1 influenza pandemic in our paper
Age-specific contacts and travel patterns in the spatial spread of 2009 H1N1 influenza pandemic
A Apolloni, C Poletto, V Colizza.
BMC Infectious Diseases 13, 176 (2013).
The two heat-maps above characterize the impact of the contact structure on the invasion potential of an epidemic (quantified by global invasion parameter, R*). The latter is altered by the level of assortativity between children and adult groups (y-axis), and the ratio between adult and children social contacts (x-axis). Have a look here for more details.