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5 Research products, page 1 of 1

  • COVID-19
  • Research data
  • Research software
  • Other research products
  • French National Research Agency (ANR)
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  • French
    Authors: 
    Gerschel, Elie; Martinez, Alejandra; Mejean, Isabelle;
    Publisher: HAL CCSD
    Country: France
    Project: ANR | IPS (ANR-11-IDEX-0003), EC | TRADENET (714597)

    International audience; Avant de se propager à l’échelle mondiale, l’épidémie de coronavirus est apparue dans la province du Hubei. Pour contenir la propagation du virus, le gouvernement chinois a imposé des mesures de quarantaine, entraînant un ralentissement de l’activité économique. Nous étudions ici la manière dont ce ralentissement de la production, initialement limité à la province de Hubei, se diffuse à l’économie mondiale via les chaînes de valeur internationales. La dépendance à l’égard des intrants chinois a augmenté de manière spectaculaire depuis le début des années 2000. De ce fait, la plupart des pays sont exposés au ralentissement de l’activité en Chine, à la fois directement via leurs importations de produits intermédiaires chinois et indirectement, du fait de la valeur ajoutée chinoise incorporée à d’autres intrants à la production. Cette note quantifie l’exposition totale de la France comparée à celle d’autres pays. Dans un premier temps, nous calculons la part de la valeur ajoutée chinoise dans la production française. Ensuite, nous utilisons des données au niveau des pays et des secteurs pour quantifier l’impact des mesures de quarantaine sur le PIB français.

  • Open Access
    Authors: 
    Contreras, Diego Andrés; Colosi, Elisabetta; Bassignana, Giulia; Colizza, Vittoria; Barrat, Alain;
    Publisher: The Royal Society
    Project: EC | MOOD (874850), ANR | Coscreen (ANR-21-CO16-0005)

    Sketch of one simulation of a spread in the office data set, for R0=3 and the weekly testing protocol with adherence 75%, for the dynamical network (left panels), heterogeneous network (middle panels) and contact matrix of distributions (right panel) representations. The nodes representing individuals are arranged according to their department and colored according to their disease compartment. The time is discretized in timesteps of 15 minutes, with contacts changing at every time step for the dynamical network representation, and from day to day in the contact matrix of distributions representation. Links are highlighted in red when a contagion event occurs. No contacts occur outside of office hours. The bottom panels show the evolution over time of the nodes in each compartment (putting together the prodromic, subclinical and clinical compartments for simplicity).

  • Open Access
    Authors: 
    Contreras, Diego Andrés; Colosi, Elisabetta; Bassignana, Giulia; Colizza, Vittoria; Barrat, Alain;
    Publisher: The Royal Society
    Project: EC | MOOD (874850), ANR | Coscreen (ANR-21-CO16-0005)

    Sketch of one simulation of a spread in the office data set, for R0=3 and the symptomatic testing protocol, for the dynamical network (left panels), heterogeneous network (middle panels) and contact matrix of distributions (right panel) representations. The nodes representing individuals are arranged according to their department and colored according to their disease compartment. The time is discretized in timesteps of 15 minutes, with contacts changing at every time step for the dynamical network representation, and from day to day in the contact matrix of distributions representation. Links are highlighted in red when a contagion event occurs. No contacts occur outside of office hours. The bottom panels show the evolution over time of the nodes in each compartment (putting together the prodromic, subclinical and clinical compartments for simplicity).

  • Open Access
    Authors: 
    Poletto, Chiara; Pierre-Yves BoĂŤlle; Colizza, Vittoria;
    Publisher: Figshare
    Project: EC | PREDEMICS (278433), ANR | HarMS-flu (ANR-12-MONU-0018)

    The file contains timeline of attention from the three digital sources considered in the paper. (XLSX 40Â kb)

  • Other research product . Other ORP type . 2020
    English
    Authors: 
    Gerschel, Elie; Martinez, Alejandra; Mejean, Isabelle;
    Publisher: HAL CCSD
    Country: France
    Project: ANR | ECODEC (ANR-11-LABX-0047), EC | TRADENET (714597)

    International audience; Before spreading globally, the Covid-19 epidemic was concentrated in the Hubei province. To contain the spread of the virus, the Chinese government has imposed quarantine measures and travel restrictions, entailing the slowdown of economic activity. We study the propagation of this geographically concentrated productivity slowdown to the global economy, through global value chains. Reliance on Chinese inputs has dramatically increased since the early 2000s. As a consequence, most countries are exposed to the Chinese productivity slowdown, both directly through their imports of Chinese inputs and indirectly, through other inputs themselves produced with some Chinese value added. This note aims at quantifying the total exposure of France compared to other countries. First, we compute the share of Chinese value added in French production. Then, we use data at the country and sector levels to quantify the impact of travel restrictions on French GDP.