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COVID-19 Alert and Surveillance Indicators

Abstract : Facing the arrival of the COVID-19 pandemic in France, Santé Publique France has set up an evolutionary surveillance system based on definitions of possible, probable and confirmed cases. But only cases confirmed by SARSCoV-2, RT-PCR (reverse transcriptase polymerase chain reaction) or serology, hospitalized cases and in-hospital deaths have been recorded on a daily basis. COVID-19 actual incidence has thus been estimated through additional indicators such as specific calls to emergency services (Samu) and SOS doctors, emergency rooms visits, or consultations in a sentinel network of general practitioners. Surveillance of non-hospital mortality has been impaired by delays and diagnostic inaccuracies of death certificates. Only in-hospital lethality could be reliably monitored.With a few essential statistical precautions and working hypotheses, models made it possible to anticipate the evolution of the epidemic based on two essential indicators: the reproduction ratio R, and the epidemic doubling time. In Ile-de-France region, the Greater Paris University Hospitals Group has used its data warehouse to complete this epidemic dashboard, including a fine modeling of patients’ care pathways. All these indicators have proved essential to plan the response to this unprecedented crisis.
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https://www.hal.inserm.fr/inserm-03211390
Contributor : Christine Dupuis <>
Submitted on : Wednesday, April 28, 2021 - 4:40:55 PM
Last modification on : Wednesday, May 26, 2021 - 7:56:03 PM
Long-term archiving on: : Thursday, July 29, 2021 - 7:04:36 PM

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R Piarroux, F Batteux, S Rebaudet, P-Y Boelle. COVID-19 Alert and Surveillance Indicators. Annales françaises de médecine d'urgence, Springer, 2020, 10, pp.333 - 339. ⟨10.3166/afmu-2020-0277⟩. ⟨inserm-03211390⟩

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