This scientist and her team have studied the effects of the first confinement and then of the deconfinement in the spring and are now modeling the “flexible” confinement of the fall. The opening of schools seemed to him an “acceptable compromise” between health, economic and educational imperatives. But we must prepare for a more difficult deconfinement, she warns.

Vittoria Colizza is a modeler, research director at Inserm, Pierre Louis Institute of Epidemiology and Public Health.

Do children over ten transmit the coronavirus less than adults?

Adolescents transmit as much as asymptomatic adults, but they are more often asymptomatic and half as likely to catch the virus on their own. The serological study carried out by the Institut Pasteur in the spring in Crépy-en-Valois, in the Oise, made it possible to study the spread of the epidemic in an infectious focus, in high school and then in families. At the time, no one had seen that the virus was actively circulating, because the students had no symptoms, and therefore had not been tested.